21 December 1994 Analysis of spacecraft and digital data pixel location accuracy for satellites METEOR
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Abstract
The results of orbit parameters calculations for satellites METEOR-2/20, 2/21 (h equals 950 km) and METEOR-3/5, 3/7 (h equals 1200 km) are analyzed. The accuracy of orbit approximation and extrapolation (prediction) for different initial data assimilation techniques is evaluated using analytical navigation model. Mean 14 day orbit prediction error during 1991-1994 amounted to 9.5 km for METEOR-2/20 and 5.6 km for METEOR-3/5. The same value for METEOR-2/21 (start 31 Aug 1993) was 2.9 km, for METEOR-3/7 (start 25 Jan 1994) was 1.3 km. The accuracy of satellite orbit prediction as well as orbit approximation is changing for the worse under high solar activity conditions. The estimates of real pixel location and estimates of deflections of axes positions for IR- radiometers << Klimat >> (10.5-12.0 mkm, 12 X 12 km2) of METEOR-3/5 and 3/7 and ScaRaBlaunched on METEOR-3/7 for Earth radiation budget measurements have been obtained. No essential systematic axes deflections and pixel location errors were detected except systematic roll angle bias of -29' for << Klimat >> on METEOR-3/5. Estimates of ground control points positions using MWDB-II database demonstrate pixel location accuracy of about 0.5 pixel size.
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Alexander P. Trishchenko, Alexander P. Trishchenko, Andrey N. Andrievskii, Andrey N. Andrievskii, } "Analysis of spacecraft and digital data pixel location accuracy for satellites METEOR", Proc. SPIE 2313, Microwave Instrumentation and Satellite Photogrammetry for Remote Sensing of the Earth, (21 December 1994); doi: 10.1117/12.197350; https://doi.org/10.1117/12.197350
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