NOAA-20 VIIRS solar diffuser BRDF on-orbit change factor for wavelengths longer than 1 micron

Ning Lei; Kevin Twedt; Xiaoxiong Xiong

doi:10.1117/12.2533478

10 October 2019 NOAA-20 VIIRS solar diffuser BRDF on-orbit change factor for wavelengths longer than 1 μm

Ning Lei, Kevin Twedt, Xiaoxiong Xiong

Proceedings Volume 11151, Sensors, Systems, and Next-Generation Satellites XXIII; 111511L (2019) https://doi.org/10.1117/12.2533478
Event: SPIE Remote Sensing, 2019, Strasbourg, France

Abstract

Once on orbit, the bidirectional reflectance distribution function (BRDF) of the solar diffuser (SD) of the Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the NOAA-20 satellite changes over time. The change factor is determined by an onboard solar diffuser stability monitor (SDSM). However, the design band central wavelengths (412 to 926 nm) of the SDSM detectors do not cover the VIIRS short wave infrared (SWIR) bands which have band central wavelengths from 1.238 to 2.257 μm. Although it is known that the SD BRDF changes at a much slower rate in time over longer wavelengths, the change over some of the SWIR bands’ central wavelengths may still be large enough to be ignored. To determine the NOAA-20 VIIRS SD BRDF change factor over the SWIR band wavelength region, we use the solar photon wavelength power law approach that has been applied to the VIIRS instrument onboard the Suomi National Polar-orbiting Partnership satellite. In this work, we show the results for the NOAA-20 VIIRS.

Conference Presentation

Citation Download Citation

Ning Lei, Kevin Twedt, and Xiaoxiong Xiong "NOAA-20 VIIRS solar diffuser BRDF on-orbit change factor for wavelengths longer than 1 μm", Proc. SPIE 11151, Sensors, Systems, and Next-Generation Satellites XXIII, 111511L (10 October 2019); https://doi.org/10.1117/12.2533478

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