Measured polarized spectral responsivity of JPSS J1 VIIRS using the NIST T-SIRCUS

Jeff McIntire; James B. Young; David Moyer; Eugene Waluschka; Xiaoxiong Xiong

doi:10.1117/12.2188515

8 September 2015 Measured polarized spectral responsivity of JPSS J1 VIIRS using the NIST T-SIRCUS

Jeff McIntire, James B. Young, David Moyer, Eugene Waluschka, Xiaoxiong Xiong

Proceedings Volume 9607, Earth Observing Systems XX; 96072D (2015) https://doi.org/10.1117/12.2188515
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Recent pre-launch measurements performed on the Joint Polar Satellite System (JPSS) J1 Visible Infrared Imaging Radiometer Suite (VIIRS) using the NIST T-SIRCUS monochromatic source have provided wavelength dependent polarization sensitivity for select spectral bands and viewing conditions. Measurements were made at a number of input linear polarization states (twelve in total) and initially at thirteen wavelengths across the bandpass (later expanded to seventeen for some cases). Using the source radiance information collected by an external monitor, a spectral responsivity function was constructed for each input linear polarization state. Additionally, an unpolarized spectral responsivity function was derived from these polarized measurements. An investigation of how the centroid, bandwidth, and detector responsivity vary with polarization state was weighted by two model input spectra to simulate both ground measurements as well as expected on-orbit conditions. These measurements will enhance our understanding of VIIRS polarization sensitivity, improve the design for future flight models, and provide valuable data to enhance product quality in the post-launch phase.

Citation Download Citation

Jeff McIntire, James B. Young, David Moyer, Eugene Waluschka, and Xiaoxiong Xiong "Measured polarized spectral responsivity of JPSS J1 VIIRS using the NIST T-SIRCUS", Proc. SPIE 9607, Earth Observing Systems XX, 96072D (8 September 2015); https://doi.org/10.1117/12.2188515

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