MODIS geolocation error analysis developments
IEEE International Geoscience and Remote Sensing Symposium - Tập 6 - Trang 3661-3663 vol.6
Tóm tắt
The Moderate Resolution Imaging Spectroradiometer (MODIS) contains 36 bands from the visible to the thermal infrared with the nominal ground field of views of 250 m, 500 m and 1 km. This paper summarizes the changes to the MODIS Earth location algorithm and geometric parameters since the launch of MODIS on the Terra spacecraft in December 1999. Detailed analysis of residuals from a global network of ground control points reveals biases in unexpected areas of the MODIS geometric model. For instance, systematic off-nadir along-track errors are best modeled by a tilt in the mirror coordinate system. Analysis also indicates that some along-track errors are possibly caused by uncertainty in spacecraft attitude estimates. We discuss how reducing these errors enable sub-pixel geolocation accuracy goals to be achieved.
Từ khóa
#MODIS #Error analysis #Mirrors #Space vehicles #Instruments #NASA #Orbital calculations #Solid modeling #Parameter estimation #Science - generalTài liệu tham khảo
nishihama, 1997, MODIS Level 1A Earth Location Algorithm Theoretical Basis Document Version 3.0, MODIS Science Data Support Team
10.1016/S0034-4257(02)00085-8
nishihama, 2000, MODIS Geolocation Algorithm and Error Analysis Tools, Proc of IGARSS'2000, 2053