Modeling the detector radiometric response gains of the Suomi NPP VIIRS reflective solar bands

Ning Lei; Zhipeng Wang; Bruce Guenther; Xiaoxiong Xiong; James Gleason

doi:10.1117/12.974728

19 November 2012 Modeling the detector radiometric response gains of the Suomi NPP VIIRS reflective solar bands

Ning Lei, Zhipeng Wang, Bruce Guenther, Xiaoxiong Xiong, James Gleason

Proceedings Volume 8533, Sensors, Systems, and Next-Generation Satellites XVI; 853319 (2012) https://doi.org/10.1117/12.974728
Event: SPIE Remote Sensing, 2012, Edinburgh, United Kingdom

Abstract

Right after the opening of the NADIR door of the Visible/Infrared Imager/Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (NPP) satellite, the detector gains of the Near InfraRed (NIR) bands have decreased much faster than expected, indicating large degradation of the VIIRS sensor optical system. To determine the root cause and to access the potential outcome of the degradation, we developed a mathematical model based on physical hypotheses on the optical system, especially the Rotating Telescope Assembly mirror surfaces. Current detector gains are consistent with a model of a four-mirror system, with each mirror having a thin contaminant layer of material that reduces the mirror transmission and the reduction is activated by solar radiation. The ratios of the reduced transmission coefficients are in good agreement with those from the reflectance measurement of the Traveling Witness Mirror (after exposure of ultraviolet light from a test lamp) independently carried out as part of the degradation anomaly investigation. In this Proceeding, we describe the mathematical model and discuss the results.

Citation Download Citation

Ning Lei, Zhipeng Wang, Bruce Guenther, Xiaoxiong Xiong, and James Gleason "Modeling the detector radiometric response gains of the Suomi NPP VIIRS reflective solar bands", Proc. SPIE 8533, Sensors, Systems, and Next-Generation Satellites XVI, 853319 (19 November 2012); https://doi.org/10.1117/12.974728

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