SlideShare una empresa de Scribd logo
1 de 30
Descargar para leer sin conexión
Development and Performance Assessment of a Real Time High-Resolution RF Channel Sounder IGARSS 2011 Vancouver – 29 th  July 2011 David Ferreira, DL-IT Rafael Caldeirinha, DL-IT | IPL
OUTLINE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],IGARSS 2011 |  Vancouver – 29 th  July 2011
MOTIVATION ,[object Object],IGARSS 2011 |  Vancouver – 29 th  July 2011
OBJECTIVES ,[object Object],[object Object],[object Object],[object Object],[object Object],IGARSS 2011 |  Vancouver – 29 th  July 2011
SLIDING CORRELATION PRINCIPLE  (1/4)   Typical transmitter section Typical receiver section IGARSS 2011 |  Vancouver – 29 th  July 2011
SLIDING CORRELATION PRINCIPLE  (2/4)   PN sequence generator Auto-correlation of a PN sequence Real spectrum of a PN sequence at 500MHz IGARSS 2011 |  Vancouver – 29 th  July 2011
SLIDING CORRELATION PRINCIPLE  (3/4)   IGARSS 2011 |  Vancouver – 29 th  July 2011
SLIDING CORRELATION PRINCIPLE  (4/4)   IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY TRANSMITTER BLOCK IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY TRANSMITTER BLOCK RF2052 development board Frequency range: 300MHz to 2.4GHz Resolution: 0.596Hz IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY TRANSMITTER BLOCK DPG2 and AD9739EBZ boards Sampling frequency: 2500MSPS 14 bits resolution IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY RECEIVER BLOCK IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY RECEIVER BLOCK 6GHz Mixer – DM0408LW2 RF/LO Bands: 4 to 8 GHz; IF Band: DC to 2GHz;  Losses: 5dB  IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY RECEIVER BLOCK I/Q Downconverter – HMC-C009 RF/LO Bands: 4 to 8.5 GHz; IF Band: DC to 3.5GHz;  Losses: 9dB  IGARSS 2011 |  Vancouver – 29 th  July 2011
IMPLEMENTED SOUNDER TOPOLOGY RECEIVER BLOCK Correlation Mixer – ZFM-2-S+ RF/LO Bands: 1 to 1000 MHz; IF Bands: DC to 1GHz;  Losses: 6dB  IGARSS 2011 |  Vancouver – 29 th  July 2011
IF PERFORMANCE ASSESSMENT ,[object Object],[object Object],TEST CONFIGURATION IGARSS 2011 |  Vancouver – 29 th  July 2011
IF PERFORMANCE ASSESSMENT SOUNDER PARAMETERS IGARSS 2011 |  Vancouver – 29 th  July 2011
IF PERFORMANCE ASSESSMENT ,[object Object],RESULTS  (1/2)   IGARSS 2011 |  Vancouver – 29 th  July 2011
[object Object],IF PERFORMANCE ASSESSMENT RESULTS  (2/2)   IGARSS 2011 |  Vancouver – 29 th  July 2011
RF PERFORMANCE ASSESSMENT ,[object Object],TEST CONFIGURATION IGARSS 2011 |  Vancouver – 29 th  July 2011
RF PERFORMANCE ASSESSMENT ,[object Object],RESULTS  (1/2)   IGARSS 2011 |  Vancouver – 29 th  July 2011
RF PERFORMANCE ASSESSMENT ,[object Object],[object Object],RESULTS  (2/2)   IGARSS 2011 |  Vancouver – 29 th  July 2011
SYSTEM PHOTOS IGARSS 2011 |  Vancouver – 29 th  July 2011 IF-STAGE  (1/2)
SYSTEM PHOTOS IGARSS 2011 |  Vancouver – 29 th  July 2011 IF-STAGE  (2/2)
SYSTEM PHOTOS IGARSS 2011 |  Vancouver – 29 th  July 2011 RF-STAGE  (1/2)
SYSTEM PHOTOS IGARSS 2011 |  Vancouver – 29 th  July 2011 RF-STAGE  (2/2)
SYSTEM PHOTOS IGARSS 2011 |  Vancouver – 29 th  July 2011 DOPPLER MEASUREMENT
CONCLUSIONS ,[object Object],[object Object],[object Object],IGARSS 2011 |  Vancouver – 29 th  July 2011
FURTHER WORK ,[object Object],[object Object],[object Object],IGARSS 2011 |  Vancouver – 29 th  July 2011
IGARSS 2011 Vancouver – 29 th  July 2011 Development and Performance Assessment of a Real Time High-Resolution RF Channel Sounder Thank you. E-mails: david.ferreira@co.it.pt [email_address]

Más contenido relacionado

La actualidad más candente

Precision Time Protocol
Precision Time ProtocolPrecision Time Protocol
Precision Time ProtocolSteven Kreuzer
 
Radar 2009 a 17 transmitters and receivers
Radar 2009 a 17 transmitters and receiversRadar 2009 a 17 transmitters and receivers
Radar 2009 a 17 transmitters and receiversForward2025
 
High Definition On MPEG In Internet Protocol (Wbm Comments)
High Definition On MPEG In Internet Protocol (Wbm Comments)High Definition On MPEG In Internet Protocol (Wbm Comments)
High Definition On MPEG In Internet Protocol (Wbm Comments)Kelly Daniels
 
Radar 2009 a 7 radar cross section 1
Radar 2009 a 7 radar cross section 1Radar 2009 a 7 radar cross section 1
Radar 2009 a 7 radar cross section 1Forward2025
 
Precision Time Synchronization
Precision Time SynchronizationPrecision Time Synchronization
Precision Time SynchronizationKrishna Sankar
 
Radar 2009 a 11 waveforms and pulse compression
Radar 2009 a 11 waveforms and pulse compressionRadar 2009 a 11 waveforms and pulse compression
Radar 2009 a 11 waveforms and pulse compressionForward2025
 
Radar 2009 a 1 introduction
Radar 2009 a  1 introductionRadar 2009 a  1 introduction
Radar 2009 a 1 introductionForward2025
 
Radar 2009 a 12 clutter rejection basics and mti
Radar 2009 a 12 clutter rejection   basics and mtiRadar 2009 a 12 clutter rejection   basics and mti
Radar 2009 a 12 clutter rejection basics and mtiForward2025
 
Data Quality Analysis of Different Receivers Based on Static Base Station
Data Quality Analysis of Different Receivers Based on Static Base StationData Quality Analysis of Different Receivers Based on Static Base Station
Data Quality Analysis of Different Receivers Based on Static Base StationIJRESJOURNAL
 
Radar Systems for NTU, 1 Nov 2014
Radar Systems for NTU, 1 Nov 2014Radar Systems for NTU, 1 Nov 2014
Radar Systems for NTU, 1 Nov 2014TBSS Group
 
1-Wang-FR1020-IGARSS11.pptx
1-Wang-FR1020-IGARSS11.pptx1-Wang-FR1020-IGARSS11.pptx
1-Wang-FR1020-IGARSS11.pptxgrssieee
 
Radar 2009 a 5 propagation effects
Radar 2009 a 5 propagation effectsRadar 2009 a 5 propagation effects
Radar 2009 a 5 propagation effectsForward2025
 
Radar 2009 a 13 clutter rejection doppler filtering
Radar 2009 a 13 clutter rejection   doppler filteringRadar 2009 a 13 clutter rejection   doppler filtering
Radar 2009 a 13 clutter rejection doppler filteringForward2025
 
Radar 2009 a 4 radar equation
Radar 2009 a  4 radar equationRadar 2009 a  4 radar equation
Radar 2009 a 4 radar equationForward2025
 
Radar 2009 a 19 electronic counter measures
Radar 2009 a 19 electronic counter measuresRadar 2009 a 19 electronic counter measures
Radar 2009 a 19 electronic counter measuresForward2025
 

La actualidad más candente (19)

Precision Time Protocol
Precision Time ProtocolPrecision Time Protocol
Precision Time Protocol
 
Radar 2009 a 17 transmitters and receivers
Radar 2009 a 17 transmitters and receiversRadar 2009 a 17 transmitters and receivers
Radar 2009 a 17 transmitters and receivers
 
High Definition On MPEG In Internet Protocol (Wbm Comments)
High Definition On MPEG In Internet Protocol (Wbm Comments)High Definition On MPEG In Internet Protocol (Wbm Comments)
High Definition On MPEG In Internet Protocol (Wbm Comments)
 
Radar 2009 a 7 radar cross section 1
Radar 2009 a 7 radar cross section 1Radar 2009 a 7 radar cross section 1
Radar 2009 a 7 radar cross section 1
 
Precision Time Synchronization
Precision Time SynchronizationPrecision Time Synchronization
Precision Time Synchronization
 
Radar 2009 a 11 waveforms and pulse compression
Radar 2009 a 11 waveforms and pulse compressionRadar 2009 a 11 waveforms and pulse compression
Radar 2009 a 11 waveforms and pulse compression
 
Radar 2009 a 1 introduction
Radar 2009 a  1 introductionRadar 2009 a  1 introduction
Radar 2009 a 1 introduction
 
Radar 2009 a 12 clutter rejection basics and mti
Radar 2009 a 12 clutter rejection   basics and mtiRadar 2009 a 12 clutter rejection   basics and mti
Radar 2009 a 12 clutter rejection basics and mti
 
Data Quality Analysis of Different Receivers Based on Static Base Station
Data Quality Analysis of Different Receivers Based on Static Base StationData Quality Analysis of Different Receivers Based on Static Base Station
Data Quality Analysis of Different Receivers Based on Static Base Station
 
IEEE1588-v2
IEEE1588-v2IEEE1588-v2
IEEE1588-v2
 
Radar Systems for NTU, 1 Nov 2014
Radar Systems for NTU, 1 Nov 2014Radar Systems for NTU, 1 Nov 2014
Radar Systems for NTU, 1 Nov 2014
 
06259468
0625946806259468
06259468
 
1-Wang-FR1020-IGARSS11.pptx
1-Wang-FR1020-IGARSS11.pptx1-Wang-FR1020-IGARSS11.pptx
1-Wang-FR1020-IGARSS11.pptx
 
Radar 2009 a 5 propagation effects
Radar 2009 a 5 propagation effectsRadar 2009 a 5 propagation effects
Radar 2009 a 5 propagation effects
 
Radar 2009 a 13 clutter rejection doppler filtering
Radar 2009 a 13 clutter rejection   doppler filteringRadar 2009 a 13 clutter rejection   doppler filtering
Radar 2009 a 13 clutter rejection doppler filtering
 
Radar 2009 a 4 radar equation
Radar 2009 a  4 radar equationRadar 2009 a  4 radar equation
Radar 2009 a 4 radar equation
 
Ieee 1588 ptp
Ieee 1588 ptpIeee 1588 ptp
Ieee 1588 ptp
 
Radar 2009 a 19 electronic counter measures
Radar 2009 a 19 electronic counter measuresRadar 2009 a 19 electronic counter measures
Radar 2009 a 19 electronic counter measures
 
Radar presentation
Radar presentation Radar presentation
Radar presentation
 

Destacado

Learning Partnerships Asia Hrd 2011 Dys
Learning Partnerships   Asia Hrd 2011 DysLearning Partnerships   Asia Hrd 2011 Dys
Learning Partnerships Asia Hrd 2011 DysDr Yvonne Sum, CSP
 
ID2725_IGARSS_2011.ppt
ID2725_IGARSS_2011.pptID2725_IGARSS_2011.ppt
ID2725_IGARSS_2011.pptgrssieee
 
Economic Data July 2011
Economic Data   July 2011Economic Data   July 2011
Economic Data July 2011jccornelius
 
Sales Overtoom July 2011
Sales Overtoom July 2011Sales Overtoom July 2011
Sales Overtoom July 2011Jo De Lange
 
Predictive analytics the customer lifecycle in a btb company
Predictive analytics  the customer lifecycle in a btb companyPredictive analytics  the customer lifecycle in a btb company
Predictive analytics the customer lifecycle in a btb companyJo De Lange
 
Developing and Enhancing Partnerships for Learning
Developing and Enhancing Partnerships for LearningDeveloping and Enhancing Partnerships for Learning
Developing and Enhancing Partnerships for LearningBecka Colley-Foster
 

Destacado (7)

Learning Partnerships Asia Hrd 2011 Dys
Learning Partnerships   Asia Hrd 2011 DysLearning Partnerships   Asia Hrd 2011 Dys
Learning Partnerships Asia Hrd 2011 Dys
 
Sheffield Events 2011
Sheffield Events 2011Sheffield Events 2011
Sheffield Events 2011
 
ID2725_IGARSS_2011.ppt
ID2725_IGARSS_2011.pptID2725_IGARSS_2011.ppt
ID2725_IGARSS_2011.ppt
 
Economic Data July 2011
Economic Data   July 2011Economic Data   July 2011
Economic Data July 2011
 
Sales Overtoom July 2011
Sales Overtoom July 2011Sales Overtoom July 2011
Sales Overtoom July 2011
 
Predictive analytics the customer lifecycle in a btb company
Predictive analytics  the customer lifecycle in a btb companyPredictive analytics  the customer lifecycle in a btb company
Predictive analytics the customer lifecycle in a btb company
 
Developing and Enhancing Partnerships for Learning
Developing and Enhancing Partnerships for LearningDeveloping and Enhancing Partnerships for Learning
Developing and Enhancing Partnerships for Learning
 

Similar a ID2725_IGARSS_2011.ppt

IGARSS2011_Lee_FinalC.pptx
IGARSS2011_Lee_FinalC.pptxIGARSS2011_Lee_FinalC.pptx
IGARSS2011_Lee_FinalC.pptxgrssieee
 
Probing the atmosphere - new radar & lidar technologies for remote sensing of...
Probing the atmosphere - new radar & lidar technologies for remote sensing of...Probing the atmosphere - new radar & lidar technologies for remote sensing of...
Probing the atmosphere - new radar & lidar technologies for remote sensing of...CLIC Innovation Ltd
 
IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...
IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...
IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...IRJET Journal
 
3 ej fccrf legnaro 2014-10-06
3   ej fccrf legnaro 2014-10-063   ej fccrf legnaro 2014-10-06
3 ej fccrf legnaro 2014-10-06thinfilmsworkshop
 
Design and fabrication of A Ku-band low noise amplifier using FR-4 substrate
Design and fabrication of A Ku-band low noise amplifier using FR-4 substrateDesign and fabrication of A Ku-band low noise amplifier using FR-4 substrate
Design and fabrication of A Ku-band low noise amplifier using FR-4 substrateTELKOMNIKA JOURNAL
 
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...Saou-Wen Su
 
A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...
A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...
A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...IRJET Journal
 
Anl Optical
Anl OpticalAnl Optical
Anl Opticalwarunaf
 
Dynamic Spectral Sensing and Resource Allocation in Optical-Wireless Networks
Dynamic Spectral Sensing and Resource Allocation in Optical-Wireless NetworksDynamic Spectral Sensing and Resource Allocation in Optical-Wireless Networks
Dynamic Spectral Sensing and Resource Allocation in Optical-Wireless NetworksAntonio Marcos Alberti
 
Advance in optical fiber amplifier
Advance in optical fiber amplifierAdvance in optical fiber amplifier
Advance in optical fiber amplifiersan456987
 
FR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdf
FR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdfFR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdf
FR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdfgrssieee
 
22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...
22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...
22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...ssusera932351
 
Design of Reconfigurable Microstrip Patch Antenna for WLAN Application
Design of Reconfigurable Microstrip Patch Antenna for WLAN ApplicationDesign of Reconfigurable Microstrip Patch Antenna for WLAN Application
Design of Reconfigurable Microstrip Patch Antenna for WLAN ApplicationEditor IJMTER
 
The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...
The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...
The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...Altair
 
UHF/VHFEnergy Harvesting Radio System Physical and MAC Layer Consideration
UHF/VHFEnergy Harvesting Radio System Physical and MAC Layer ConsiderationUHF/VHFEnergy Harvesting Radio System Physical and MAC Layer Consideration
UHF/VHFEnergy Harvesting Radio System Physical and MAC Layer Considerationxiaohuzhang
 
Xavier University Wireless Survey
Xavier University Wireless SurveyXavier University Wireless Survey
Xavier University Wireless Surveyfrfankdubec
 
MTECH 3RD SEM PPT-1.pptx
MTECH 3RD SEM PPT-1.pptxMTECH 3RD SEM PPT-1.pptx
MTECH 3RD SEM PPT-1.pptxSupriaNandan
 

Similar a ID2725_IGARSS_2011.ppt (20)

IGARSS2011_Lee_FinalC.pptx
IGARSS2011_Lee_FinalC.pptxIGARSS2011_Lee_FinalC.pptx
IGARSS2011_Lee_FinalC.pptx
 
Probing the atmosphere - new radar & lidar technologies for remote sensing of...
Probing the atmosphere - new radar & lidar technologies for remote sensing of...Probing the atmosphere - new radar & lidar technologies for remote sensing of...
Probing the atmosphere - new radar & lidar technologies for remote sensing of...
 
An31274278
An31274278An31274278
An31274278
 
IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...
IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...
IRJET- Wave Ultrasonic Testing and how to Improve its Characteristics by Vary...
 
3 ej fccrf legnaro 2014-10-06
3   ej fccrf legnaro 2014-10-063   ej fccrf legnaro 2014-10-06
3 ej fccrf legnaro 2014-10-06
 
Design and fabrication of A Ku-band low noise amplifier using FR-4 substrate
Design and fabrication of A Ku-band low noise amplifier using FR-4 substrateDesign and fabrication of A Ku-band low noise amplifier using FR-4 substrate
Design and fabrication of A Ku-band low noise amplifier using FR-4 substrate
 
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...
 
A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...
A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...
A Wideband Circularly Polarized Printed Monopole Antenna with Symmetric Groun...
 
Anl Optical
Anl OpticalAnl Optical
Anl Optical
 
K0536569
K0536569K0536569
K0536569
 
Dynamic Spectral Sensing and Resource Allocation in Optical-Wireless Networks
Dynamic Spectral Sensing and Resource Allocation in Optical-Wireless NetworksDynamic Spectral Sensing and Resource Allocation in Optical-Wireless Networks
Dynamic Spectral Sensing and Resource Allocation in Optical-Wireless Networks
 
Advance in optical fiber amplifier
Advance in optical fiber amplifierAdvance in optical fiber amplifier
Advance in optical fiber amplifier
 
FR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdf
FR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdfFR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdf
FR2_T04_1_PAU_INTA_MicroSat_A_Camps.pdf
 
22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...
22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...
22-11-0079-00-0000-geolocation-technologies-suitable-to-meet-regulatory-requi...
 
final Pres12
final Pres12final Pres12
final Pres12
 
Design of Reconfigurable Microstrip Patch Antenna for WLAN Application
Design of Reconfigurable Microstrip Patch Antenna for WLAN ApplicationDesign of Reconfigurable Microstrip Patch Antenna for WLAN Application
Design of Reconfigurable Microstrip Patch Antenna for WLAN Application
 
The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...
The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...
The Use of Suimulation (FEKO) to Investigate Antenna Performance on Mobile Pl...
 
UHF/VHFEnergy Harvesting Radio System Physical and MAC Layer Consideration
UHF/VHFEnergy Harvesting Radio System Physical and MAC Layer ConsiderationUHF/VHFEnergy Harvesting Radio System Physical and MAC Layer Consideration
UHF/VHFEnergy Harvesting Radio System Physical and MAC Layer Consideration
 
Xavier University Wireless Survey
Xavier University Wireless SurveyXavier University Wireless Survey
Xavier University Wireless Survey
 
MTECH 3RD SEM PPT-1.pptx
MTECH 3RD SEM PPT-1.pptxMTECH 3RD SEM PPT-1.pptx
MTECH 3RD SEM PPT-1.pptx
 

Más de grssieee

Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...
Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...
Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...grssieee
 
SEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODEL
SEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODELSEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODEL
SEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODELgrssieee
 
TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...
TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...
TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...grssieee
 
THE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIES
THE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIESTHE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIES
THE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIESgrssieee
 
GMES SPACE COMPONENT:PROGRAMMATIC STATUS
GMES SPACE COMPONENT:PROGRAMMATIC STATUSGMES SPACE COMPONENT:PROGRAMMATIC STATUS
GMES SPACE COMPONENT:PROGRAMMATIC STATUSgrssieee
 
PROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETER
PROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETERPROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETER
PROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETERgrssieee
 
DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...
DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...
DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...grssieee
 
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...grssieee
 
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...grssieee
 
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...grssieee
 
test 34mb wo animations
test  34mb wo animationstest  34mb wo animations
test 34mb wo animationsgrssieee
 
2011_Fox_Tax_Worksheets.pdf
2011_Fox_Tax_Worksheets.pdf2011_Fox_Tax_Worksheets.pdf
2011_Fox_Tax_Worksheets.pdfgrssieee
 
DLR open house
DLR open houseDLR open house
DLR open housegrssieee
 
DLR open house
DLR open houseDLR open house
DLR open housegrssieee
 
DLR open house
DLR open houseDLR open house
DLR open housegrssieee
 
Tana_IGARSS2011.ppt
Tana_IGARSS2011.pptTana_IGARSS2011.ppt
Tana_IGARSS2011.pptgrssieee
 
Solaro_IGARSS_2011.ppt
Solaro_IGARSS_2011.pptSolaro_IGARSS_2011.ppt
Solaro_IGARSS_2011.pptgrssieee
 

Más de grssieee (20)

Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...
Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...
Tangent height accuracy of Superconducting Submillimeter-Wave Limb-Emission S...
 
SEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODEL
SEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODELSEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODEL
SEGMENTATION OF POLARIMETRIC SAR DATA WITH A MULTI-TEXTURE PRODUCT MODEL
 
TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...
TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...
TWO-POINT STATISTIC OF POLARIMETRIC SAR DATA TWO-POINT STATISTIC OF POLARIMET...
 
THE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIES
THE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIESTHE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIES
THE SENTINEL-1 MISSION AND ITS APPLICATION CAPABILITIES
 
GMES SPACE COMPONENT:PROGRAMMATIC STATUS
GMES SPACE COMPONENT:PROGRAMMATIC STATUSGMES SPACE COMPONENT:PROGRAMMATIC STATUS
GMES SPACE COMPONENT:PROGRAMMATIC STATUS
 
PROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETER
PROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETERPROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETER
PROGRESSES OF DEVELOPMENT OF CFOSAT SCATTEROMETER
 
DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...
DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...
DEVELOPMENT OF ALGORITHMS AND PRODUCTS FOR SUPPORTING THE ITALIAN HYPERSPECTR...
 
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
 
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
 
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
EO-1/HYPERION: NEARING TWELVE YEARS OF SUCCESSFUL MISSION SCIENCE OPERATION A...
 
Test
TestTest
Test
 
test 34mb wo animations
test  34mb wo animationstest  34mb wo animations
test 34mb wo animations
 
Test 70MB
Test 70MBTest 70MB
Test 70MB
 
Test 70MB
Test 70MBTest 70MB
Test 70MB
 
2011_Fox_Tax_Worksheets.pdf
2011_Fox_Tax_Worksheets.pdf2011_Fox_Tax_Worksheets.pdf
2011_Fox_Tax_Worksheets.pdf
 
DLR open house
DLR open houseDLR open house
DLR open house
 
DLR open house
DLR open houseDLR open house
DLR open house
 
DLR open house
DLR open houseDLR open house
DLR open house
 
Tana_IGARSS2011.ppt
Tana_IGARSS2011.pptTana_IGARSS2011.ppt
Tana_IGARSS2011.ppt
 
Solaro_IGARSS_2011.ppt
Solaro_IGARSS_2011.pptSolaro_IGARSS_2011.ppt
Solaro_IGARSS_2011.ppt
 

Último

Meet the new FSP 3000 M-Flex800™
Meet the new FSP 3000 M-Flex800™Meet the new FSP 3000 M-Flex800™
Meet the new FSP 3000 M-Flex800™Adtran
 
Building AI-Driven Apps Using Semantic Kernel.pptx
Building AI-Driven Apps Using Semantic Kernel.pptxBuilding AI-Driven Apps Using Semantic Kernel.pptx
Building AI-Driven Apps Using Semantic Kernel.pptxUdaiappa Ramachandran
 
Anypoint Code Builder , Google Pub sub connector and MuleSoft RPA
Anypoint Code Builder , Google Pub sub connector and MuleSoft RPAAnypoint Code Builder , Google Pub sub connector and MuleSoft RPA
Anypoint Code Builder , Google Pub sub connector and MuleSoft RPAshyamraj55
 
The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...
The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...
The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...Aggregage
 
Empowering Africa's Next Generation: The AI Leadership Blueprint
Empowering Africa's Next Generation: The AI Leadership BlueprintEmpowering Africa's Next Generation: The AI Leadership Blueprint
Empowering Africa's Next Generation: The AI Leadership BlueprintMahmoud Rabie
 
AI Fame Rush Review – Virtual Influencer Creation In Just Minutes
AI Fame Rush Review – Virtual Influencer Creation In Just MinutesAI Fame Rush Review – Virtual Influencer Creation In Just Minutes
AI Fame Rush Review – Virtual Influencer Creation In Just MinutesMd Hossain Ali
 
Introduction to Matsuo Laboratory (ENG).pptx
Introduction to Matsuo Laboratory (ENG).pptxIntroduction to Matsuo Laboratory (ENG).pptx
Introduction to Matsuo Laboratory (ENG).pptxMatsuo Lab
 
Secure your environment with UiPath and CyberArk technologies - Session 1
Secure your environment with UiPath and CyberArk technologies - Session 1Secure your environment with UiPath and CyberArk technologies - Session 1
Secure your environment with UiPath and CyberArk technologies - Session 1DianaGray10
 
Building Your Own AI Instance (TBLC AI )
Building Your Own AI Instance (TBLC AI )Building Your Own AI Instance (TBLC AI )
Building Your Own AI Instance (TBLC AI )Brian Pichman
 
Cybersecurity Workshop #1.pptx
Cybersecurity Workshop #1.pptxCybersecurity Workshop #1.pptx
Cybersecurity Workshop #1.pptxGDSC PJATK
 
Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...
Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...
Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...DianaGray10
 
9 Steps For Building Winning Founding Team
9 Steps For Building Winning Founding Team9 Steps For Building Winning Founding Team
9 Steps For Building Winning Founding TeamAdam Moalla
 
Comparing Sidecar-less Service Mesh from Cilium and Istio
Comparing Sidecar-less Service Mesh from Cilium and IstioComparing Sidecar-less Service Mesh from Cilium and Istio
Comparing Sidecar-less Service Mesh from Cilium and IstioChristian Posta
 
UiPath Solutions Management Preview - Northern CA Chapter - March 22.pdf
UiPath Solutions Management Preview - Northern CA Chapter - March 22.pdfUiPath Solutions Management Preview - Northern CA Chapter - March 22.pdf
UiPath Solutions Management Preview - Northern CA Chapter - March 22.pdfDianaGray10
 
VoIP Service and Marketing using Odoo and Asterisk PBX
VoIP Service and Marketing using Odoo and Asterisk PBXVoIP Service and Marketing using Odoo and Asterisk PBX
VoIP Service and Marketing using Odoo and Asterisk PBXTarek Kalaji
 
Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...
Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...
Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...Will Schroeder
 
AI You Can Trust - Ensuring Success with Data Integrity Webinar
AI You Can Trust - Ensuring Success with Data Integrity WebinarAI You Can Trust - Ensuring Success with Data Integrity Webinar
AI You Can Trust - Ensuring Success with Data Integrity WebinarPrecisely
 
Bird eye's view on Camunda open source ecosystem
Bird eye's view on Camunda open source ecosystemBird eye's view on Camunda open source ecosystem
Bird eye's view on Camunda open source ecosystemAsko Soukka
 
Igniting Next Level Productivity with AI-Infused Data Integration Workflows
Igniting Next Level Productivity with AI-Infused Data Integration WorkflowsIgniting Next Level Productivity with AI-Infused Data Integration Workflows
Igniting Next Level Productivity with AI-Infused Data Integration WorkflowsSafe Software
 

Último (20)

Meet the new FSP 3000 M-Flex800™
Meet the new FSP 3000 M-Flex800™Meet the new FSP 3000 M-Flex800™
Meet the new FSP 3000 M-Flex800™
 
Building AI-Driven Apps Using Semantic Kernel.pptx
Building AI-Driven Apps Using Semantic Kernel.pptxBuilding AI-Driven Apps Using Semantic Kernel.pptx
Building AI-Driven Apps Using Semantic Kernel.pptx
 
Anypoint Code Builder , Google Pub sub connector and MuleSoft RPA
Anypoint Code Builder , Google Pub sub connector and MuleSoft RPAAnypoint Code Builder , Google Pub sub connector and MuleSoft RPA
Anypoint Code Builder , Google Pub sub connector and MuleSoft RPA
 
The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...
The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...
The Data Metaverse: Unpacking the Roles, Use Cases, and Tech Trends in Data a...
 
Empowering Africa's Next Generation: The AI Leadership Blueprint
Empowering Africa's Next Generation: The AI Leadership BlueprintEmpowering Africa's Next Generation: The AI Leadership Blueprint
Empowering Africa's Next Generation: The AI Leadership Blueprint
 
AI Fame Rush Review – Virtual Influencer Creation In Just Minutes
AI Fame Rush Review – Virtual Influencer Creation In Just MinutesAI Fame Rush Review – Virtual Influencer Creation In Just Minutes
AI Fame Rush Review – Virtual Influencer Creation In Just Minutes
 
Introduction to Matsuo Laboratory (ENG).pptx
Introduction to Matsuo Laboratory (ENG).pptxIntroduction to Matsuo Laboratory (ENG).pptx
Introduction to Matsuo Laboratory (ENG).pptx
 
Secure your environment with UiPath and CyberArk technologies - Session 1
Secure your environment with UiPath and CyberArk technologies - Session 1Secure your environment with UiPath and CyberArk technologies - Session 1
Secure your environment with UiPath and CyberArk technologies - Session 1
 
Building Your Own AI Instance (TBLC AI )
Building Your Own AI Instance (TBLC AI )Building Your Own AI Instance (TBLC AI )
Building Your Own AI Instance (TBLC AI )
 
Cybersecurity Workshop #1.pptx
Cybersecurity Workshop #1.pptxCybersecurity Workshop #1.pptx
Cybersecurity Workshop #1.pptx
 
Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...
Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...
Connector Corner: Extending LLM automation use cases with UiPath GenAI connec...
 
9 Steps For Building Winning Founding Team
9 Steps For Building Winning Founding Team9 Steps For Building Winning Founding Team
9 Steps For Building Winning Founding Team
 
Comparing Sidecar-less Service Mesh from Cilium and Istio
Comparing Sidecar-less Service Mesh from Cilium and IstioComparing Sidecar-less Service Mesh from Cilium and Istio
Comparing Sidecar-less Service Mesh from Cilium and Istio
 
UiPath Solutions Management Preview - Northern CA Chapter - March 22.pdf
UiPath Solutions Management Preview - Northern CA Chapter - March 22.pdfUiPath Solutions Management Preview - Northern CA Chapter - March 22.pdf
UiPath Solutions Management Preview - Northern CA Chapter - March 22.pdf
 
VoIP Service and Marketing using Odoo and Asterisk PBX
VoIP Service and Marketing using Odoo and Asterisk PBXVoIP Service and Marketing using Odoo and Asterisk PBX
VoIP Service and Marketing using Odoo and Asterisk PBX
 
201610817 - edge part1
201610817 - edge part1201610817 - edge part1
201610817 - edge part1
 
Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...
Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...
Apres-Cyber - The Data Dilemma: Bridging Offensive Operations and Machine Lea...
 
AI You Can Trust - Ensuring Success with Data Integrity Webinar
AI You Can Trust - Ensuring Success with Data Integrity WebinarAI You Can Trust - Ensuring Success with Data Integrity Webinar
AI You Can Trust - Ensuring Success with Data Integrity Webinar
 
Bird eye's view on Camunda open source ecosystem
Bird eye's view on Camunda open source ecosystemBird eye's view on Camunda open source ecosystem
Bird eye's view on Camunda open source ecosystem
 
Igniting Next Level Productivity with AI-Infused Data Integration Workflows
Igniting Next Level Productivity with AI-Infused Data Integration WorkflowsIgniting Next Level Productivity with AI-Infused Data Integration Workflows
Igniting Next Level Productivity with AI-Infused Data Integration Workflows
 

ID2725_IGARSS_2011.ppt

Notas del editor

  1. Good morning everyone. My name is and for the next 15 or so, I will be presenting some of the work that we have been doing for the past months, at IT and IPL in Leiria, Portugal, on the topic of radio channel sounders. So, as the name suggests, this specific presentation will focus on the IF stage of a real time high-resolution channel sounder employed with the sliding correlation technique.
  2. This is the outline for the presentation. I will start with the motivation and objectives behind this work. Then, I approach the sliding correlation principle used in the sounder. I will also present some block diagrams showing the topology of the system, go through the performance assessment of the sounder, show some photos of the complete system… And will end with some conclusions and future work.
  3. So, the motivation behind this work concerns the characterisation and modelling of propagation channels. We want to measure the influence that each channel makes to a certain radiowave frequency, and also its characteristics in terms of multipath and Doppler.
  4. The objective for this work was to develop and test a swept time-delayed cross-correlation RF channel sounder, or STDCC for short, or even sliding correlation. The sounder had to fulfil the following requirements: Ease in changing its parameters, allowing to maximize the performance depending on the measurement scenario; High time resolution for the channel impulse responses obtained (better than 2ns); Ensure a good dynamic range; And to have the capability to measure multipath components in both amplitude and phase, allowing for Doppler spectrum analysis.
  5. Here we have an example of the transmitter and receiver blocks for a sliding correlation sounder. On the transmitter we have a pseudo-noise sequence generator, and then the signal is up-converted and transmitted. On the receiver, the signal acquired by the antenna is down-converted, filtered and amplified, and then it is correlated in a mixer with a replica of the signal created on the transmitter, but, and this is the important part, this PN sequence created on the receiver has a slightly lower chip frequency. This frequency difference makes the sequences slide against each other in time, and only when they are perfectly aligned in time we have a correlation peak at the output. The sliding of the sequences has another interesting property, lets suppose we have 2 multipath components separated by only a few ns. With this sliding principle, the signal at the output will show a separation in the order of ms, for example. We have therefore a time scale dilation.
  6. The PN sequences best suited for this type of sounder are designated in the literature by Maximal Length Linear Shift Register sequences. These sequences can be generated like showed in the figure. These sequences maximize the signal at the output of the correlation (when perfectly aligned), but if they deviate one chip from each other, the output of the correlation will have its minimum value, like showed in the figure. The real spectrum of a PN sequence has this appearance…
  7. This video will show what I’ve been saying. The red sequence is the one generated at the transmitter, and that was attenuated by the channel. The black sequence, which is generated at the receiver, is identical to the red one with the exception that has a slower clock rate. Playing the video we will see that only when they are both perfectly aligned, we will have a correlation peak. When they deviate one chip from each other the correlation will have its minimum.
  8. This video shows a transmitter sequence in red that is comprised of, let’s say, a direct ray and two multipath components, with different delays between each other. When playing the video, we see that each time one of the received sequences aligns with the receiver PN sequence, we will have a correlation peak.
  9. This figure represents the transmitter block diagram of the developed sounder, and I will be focusing on the IF stage components…
  10. Basically it is comprised of a clock generator from manufacturer RFMD, being showed some of its most relevant specifications. This board is responsible for the clock that controls the chip frequency of the PN sequence.
  11. The PN sequence generator is comprised of 2 different components: -> The Data Pattern Generator in which the computer generated PN sequences are stored in volatile memory. ->The AD9739 converts the data sent by the DPG2 to the analogue domain… Next, the sequence is amplified and filtered, up-converted and transmitted to the radio channel.
  12. This is the complete block diagram for the receiver section of the sounder… The signal acquired by the RF stage is down-converted to base-band, and next it enters the IF section of the sounder…
  13. After initial filtering, the signal enters a mixer to be up-converted to 6GHz, so that it is in the frequency range of the I/Q down-converter.
  14. The I/Q down-converter is responsible for the separation of the signal in its phase and quadrature components…
  15. The signals outputted by the I/Q down-converter are filtered and amplified and enter the correlation mixers, so that real-time correlation can be performed with a replica of the transmitted signal but at a slightly slower frequency and represented by the blocks on the right… The correlation output signals, which have frequencies in the order of Hz to kHz, are then filtered and amplified, and finally acquired by a data acquisition card.
  16. So, in order to test the IF stage, we resorted to this setup which consists in the use of splitters and combiners to simulate different multipath components. With this scheme it is possible to test different delays between the components, simply by changing the cables lengths… With the attenuators it is possible to test different signal level combinations associated to each multipath component.
  17. This table presents the main characteristics of the IF stage, when performing the various tests… The most significant variables, that will determine the sounder performance are: -> Chip period; -> PN sequence length; -> The frequency difference between the transmitter and receiver PN sequences…
  18. This slide shows the results for the test which was intended to confirm the sounder time resolution of 2ns. On the left side we see an overall picture of the output which as the three components. The third most delayed component was achieved with a 15m cable. On the right side, it is visible in greater detail the correlation peaks for the first 2 multipath components.
  19. This figure shows an identical test to the previous one, with the difference being that we attenuated significantly the third component, so that we could see where the lower limit for the system was. From this test we see 40dB of dynamic range, but considering that the upper limit was limited to the output power limit and subsequent splitting of the signals, we could expect the effective dynamic range to be around 50dB.
  20. In order to test the full sounder, i.e. IF stage coupled to a RF stage (in this case operating at 18.7GHz), we first resorted to this bench setup which is similar to the one showed previously.
  21. This figure shows a small time frame of the actual measurement, and we can clearly see two correlated path contributions, which actually correspond to the periodic repetition of the PN sequence being transmitted. While doing several bench tests, we saw an overall dynamic range close to 40dB, although it can be a few dB’s higher depending on the sounder parameters (namely the number of bits used to create the PN sequence).
  22. These measurements were achieved by attaching our receiver box to a robot from the robotics department. This robot had a maximum speed of 0.510m/s, and as we can see from the Doppler spectra, the results show a very good agreement. The figure on the left was when the robot was moving away from the transmitter, and the one on the right was when the robot was closing in on the transmitter. The slight difference in the absolute frequency shift can be explained because when the second measurement was done, the robots’ batteries were slightly more depleted.
  23. Tx
  24. Rx
  25. The lower white box was used with the single purpose of elevating the receiver box to the level of the transmitter box
  26. The developed IF system allows to clearly distinguish multipath components separated by only 2ns… When compared to the frequency sweep method, we see that the real-time sliding correlation shows equivalent performance in time resolution (for this specific test), with the benefit of not requiring a physical connection between transmitter and receiver, and also allowing to analyse Doppler spectra. The possibility to easily modify the PN sequence properties, allows one to adjust the sounder specifications according to the measurement scenario.
  27. It is intended to integrate the developed IF system on several RF subsystems, followed by rigorous testing of the performance characteristics of the sounder, and find the overall dynamic range of the full system. It is also intended to develop a post-processing method to obtain the Doppler spectrum associated to each multipath component. Perform an extensive study on the influence of the several adjustable parameters of the sounder. And finally, housing of the developed IF stage, allowing for an easy relocation over different measurement locations.