The assessment of in-flight dynamic range and response linearity of optical payloads onboard GF-1 satellite

Caixia Gao; Lingling Ma; Yaokai Liu; Ning Wang; Yonggang Qian; Lingli Tang; Chuanrong Li

doi:10.1117/12.2068794

19 November 2014 The assessment of in-flight dynamic range and response linearity of optical payloads onboard GF-1 satellite

Caixia Gao, Lingling Ma, Yaokai Liu, Ning Wang, Yonggang Qian, Lingli Tang, Chuanrong Li

Author Affiliations +

Proceedings Volume 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III; 92641F (2014) https://doi.org/10.1117/12.2068794
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China

Abstract

Dynamic range and response linearity are two key parameters for impacting the quality of remote sensing image and subsequently the quantitative applications. Due to the space radiation and the degrading of electronic devices, the inflight dynamic range and response linearity of remote sensing payload are subject to change, and is essential to be assessed. Therefore, in this paper, with the aid of the permanent artificial target located in the AOE Baotou site in China, the two parameters for pan-chromatic camera (Pan) and the multi-spectral camera (Band 1-4) onboard GF-1 satellite are assessed with an extrapolation method using the in situ measurements and corresponding images acquired on November 4, 2013. The results show that the low point of the dynamic range for Pan band, Band 1, Band2, Band3 and Band4 is -24.08 W•sr-1m-2μm-1, -52.22 W•sr-1m-2μm-1, -35.20 W•sr-1m-2μm-1, -31.92 W•sr-1m-2μm-1, -24.07 W•sr-1m-2μm- 1 respectively; while the corresponding high point is 271.77 W•sr-1m-2μm-1, 401.58 W•sr-1m-2μm-1, 287.46 W•sr-1m- 2μm-1, 237.33W•sr-1m-2μm-1, 307.49W•sr-1m-2μm-1, respectively; meanwhile, it is demonstrated that all the sensors have a response linearity error of lower than 1%. Moreover, an analysis for this assessment is performed in terms of the uncertainties for surface reflectance measurement (1%), aerosol optical depth (10%), column water vapor (10%), MODTRAN model (1%) and solar irradiance (1%) using a simulation method with the aid of MODTRAN 4.0 model, and a total uncertainty of 2.12% is acquired.

Citation Download Citation

Caixia Gao, Lingling Ma, Yaokai Liu, Ning Wang, Yonggang Qian, Lingli Tang, and Chuanrong Li "The assessment of in-flight dynamic range and response linearity of optical payloads onboard GF-1 satellite", Proc. SPIE 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III, 92641F (19 November 2014); https://doi.org/10.1117/12.2068794

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available