Translator Disclaimer
15 October 2012 On-orbit performance of the MODIS reflective solar bands time-dependent response versus scan angle algorithm
Author Affiliations +
Abstract
Time-dependent Response versus Scan angle (RVS) is vital for MODIS Reflective Solar Bands (RSB) on-orbit calibration. Time-dependent RVS Look-Up Tables (LUT) have been applied to MODIS Level 1B (L1B) since Collection 4. Various approaches have been developed to derive the time-dependent RVS LUT for MODIS RSB. The Collection 4 time-dependent RVS was developed based on the response from the on-board calibrators. In Collection 5, the RVS is derived using the on-board calibrators with additional input of mirror side differences from invariant ocean targets. The Collection 5 methodology is carried over in Collection 6 for most RSB with the exception of Terra MODIS bands 1-4, and 8-9 and Aqua MODIS bands 8-9, where response trending from pseudo-invariant desert targets is used in addition to the measurements from the on-board calibrators. For these bands, the SD/SDSM calibration may not provide accurate gains and/or the linear approximation for the AOI dependence may not be adequate. As a result, earth scene response trending is used in Collection 6 for the derivation of the RVS for the aforementioned bands. In this report, we review all the methodologies used to derive the on-orbit RVS and the performance of the derived timedependent RVS.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Sun, X. Xiong, A. Angal, H. Chen, Xu Geng, and A. Wu "On-orbit performance of the MODIS reflective solar bands time-dependent response versus scan angle algorithm", Proc. SPIE 8510, Earth Observing Systems XVII, 85100J (15 October 2012); https://doi.org/10.1117/12.930021
PROCEEDINGS
9 PAGES


SHARE
Advertisement
Advertisement
Back to Top