JPSS-1 VIIRS solar diffuser stability monitor response versus sun angle of incidence

Vijay Murgai; Kristie Yu; Neil Nelson; James McCarthy

doi:10.1117/12.2189328

8 September 2015 JPSS-1 VIIRS solar diffuser stability monitor response versus sun angle of incidence

Vijay Murgai, Kristie Yu, Neil Nelson, James McCarthy

Proceedings Volume 9607, Earth Observing Systems XX; 960715 (2015) https://doi.org/10.1117/12.2189328
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The Visible/Infrared Imaging Radiometer Suite (VIIRS) is a key sensor on the Suomi National Polar-orbiting Partnership (NPP) satellite in orbit as well as for the upcoming Joint Polar Satellite System (JPSS). VIIRS collects Earth radiometry and imagery in 22 spectral from 0.4 to 12.5 μm. Radiometric calibration of the reflective bands in the 0.4 to 2.5 μm wavelength range is performed by measuring the sunlight reflectance from Solar Diffuser Assembly (diffuser is Spectralon®). Spectralon® is known to solarize due to sun UV exposure at the blue end of the spectrum (~0.4 – 0.6+ μm) as seen by laboratory tests as well as on orbit data from MODIS and NPP. VIIRS uses a Solar Diffuser Stability Monitor (SDSM) to monitor the change in the Solar Diffuser reflectance in the 0.4 – 0.94 μm wavelength range to correct the calibration constants. The SDSM measures the ratio of sun light reflecting from the Solar Diffuser to a direct view of the sun. As the intensity of the light reaching the SDSM in both Solar Diffuser view and sun view is a function of the sun’s angle of incidence (AOI), the SDSM response to sun AOI has to be characterized. This paper presents details of the test setup including an extended collimated source simulating the sun across all SDSM bands. The prelaunch characterization results for the JPSS-1 (J1) VIIRS SDSM are presented. Comparison with NPP on orbit yaw maneuver SDSM results shows similar behavior demonstrating that the J1 test successfully characterized the SDSM response to sun AOI.

Citation Download Citation

Vijay Murgai, Kristie Yu, Neil Nelson, and James McCarthy "JPSS-1 VIIRS solar diffuser stability monitor response versus sun angle of incidence", Proc. SPIE 9607, Earth Observing Systems XX, 960715 (8 September 2015); https://doi.org/10.1117/12.2189328

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sun

Diffusers

Electroluminescence

Sensors

Reflectivity

Bidirectional reflectance transmission function

Modulation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years