A simple IDL code to show how to compute the field of view (FOV) footprint projection on the Earth Ellipsoid for Cross-track Infrared Sounder (CrIS) and Advanced Technology Microwave Sounder (ATMS) on JPSS satellite . The method can be found in the section "3.2 Computation of CrIS FOV Footprint" from the paper,
Wang, L., D. A. Tremblay, Y. Han, M. Esplin, D. E. Hagan, J. Predina, L. Suwinski, X. Jin, and Y. Chen (2013), Geolocation assessment for CrIS sensor data records, J. Geophys. Res. Atmos., 118, 12,690–12,704, doi: 10.1002/2013JD020376.
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ATMS case ==> atms_test.pro
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CrIS case ==> cris_test.pro
set "print=1" for image output set "print=0" for image plot in the x device