IGARSS 2011 pt slides_7 28 2011.ppt

GOCI: Early In-Orbit Performances Han-Dol KIM*, Gm-Sil Kang*, Joo-Hyung Ryu** Pierre Coste † , Philippe Meyer † *Korea Aerospace Research Institute (KARI) **Korea Ocean Research and Development Institute (KORDI) † EADS Astrium July 28, 2011 Vancouver, CANADA 2011 IGARSS TH3.T05

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction of COMS (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction of COMS (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction of GOCI (1) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction of GOCI (2) ,[object Object],Items Technical requirements Ground Sample Distance (GSD)  500m  500m at the center of the target area Target area ,[object Object],[object Object],Spectral coverage 412 nm ~ 865 nm (8 channels) Bandwidth 10 nm ~ 40 nm SNR 750 ~ 1200 System MTF 0.3 on all bands (after ground processing) Dynamic range NEdR ~ Maximum cloud radiance Radiometric calibration accuracy 4 % Digitization 12 bit

Introduction of GOCI (3) ,[object Object],(Z+ Earth) GOCI Main Unit (w/o MLI protection)

Introduction of GOCI (4) ,[object Object],GOCI Main Unit (w/o MLI protection) during integration phase

Introduction of GOCI (5) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],GOCI CMOS Detector

Introduction of GOCI (5) ,[object Object],[object Object],[object Object]

Introduction of GOCI (5) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction of GOCI (6) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Current Status of COMS & GOCI (1) COMS launch and mission timeline

Current Status of COMS and GOCI (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Current Status of COMS and GOCI (3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

GOCI In-Orbit Performances (1) Functional chain architecture of Data Processing

GOCI In-Orbit Performances (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],2D mapping parameter O 2D mapping parameter F ,[object Object]

GOCI In-Orbit Performances (3) ,[object Object],[object Object],[object Object],Ground Measured Radiometric Response In-orbit radiometric responsivity G & b , PRNU (Pixel Response Non-Uniformity)  On-ground measured values Digital count image of Sun diffused by SD

GOCI In-Orbit Performances (4) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],SD image for long integration time SD image for short integration time Gain matrix

GOCI In-Orbit Performances (5) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linear gain Non-linear gain : sun images : measurement parameter for sun imaging  SD: diffusion factor of SD,  SD : solar incident angle, T SD : integration time where E s : solar irradiance, ,[object Object]

GOCI In-Orbit Performances (6) ,[object Object],[object Object],L0 image (raw digital image, slot 7, B8) L1A image (radiance image, slot 7, B8) 08/09/2010, 00:15:00 UTC ,[object Object],where : raw data after offset correction : Gain parameters calculated through in-orbit solar calibration

GOCI In-Orbit Performances (7) ,[object Object],[object Object],[object Object],[object Object]

GOCI In-Orbit Performances (8) ,[object Object],[object Object],[object Object],[object Object],Nominal side Redundant side

GOCI In-Orbit Performances (9) MTF ,[object Object],[object Object],[object Object]

GOCI In-Orbit Performances (10) ,[object Object],[object Object],[object Object],[object Object]

GOCI In-Orbit Performances (11) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

GOCI In-Orbit Performances (12) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

GOCI In-Orbit Performances (13) ,[object Object],[object Object],Mean Standard Deviation Performance Performance (  rad) EW NS EW NS EW NS EW NS Navigation 0.05 0.46 0.56 0.52 1.72 2.03 24.1 28.4 Band-to-Band Reg. -0.01 0.00 0.30 0.25 0.92 0.74 12.9 10.4

GOCI In-Orbit Performances (14) ,[object Object],[object Object]

Conclusion ,[object Object],[object Object],[object Object],[object Object]

IGARSS 2011 pt slides_7 28 2011.ppt

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IGARSS 2011 pt slides_7 28 2011.ppt

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