Landsat-4 horizon scanner flight performance

Details Landsat-4 horizon scanner flight performance Landsat-4 horizon scanner flight performance

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984adans..54..143b&link_type=abstract

IN: Astrodynamics 1983; Proceedings of the Conference, Lake Placid, NY, August 22-25, 1983. Part 1 (A84-30526 13-13). San Diego,

Astronomy and Astrophysics

Astronomy

Flight Characteristics, Horizon Scanners, Landsat 4, Satellite Instruments, Data Processing, Eccentric Orbits, Error Analysis, Flight Altitude, Radiance, Variability

Scientific paper

This paper presents an analysis of the flight data from a new design of horizon scanner flown on Landsat-4. The salient features in the data are described and demonstrated by data plots. High frequency noise must be filtered out to achieve good accuracy, but this is effectively done by 128-point averaging. Sun and moon interference effects are identified. The effects of earth oblateness and spacecraft altitude variations are modeled, and the residual systematic errors are analyzed. Most of the residual errors are apparently explained by the effects of earth radiance variation, with the winter polar regions showing the highest variability in the attitude measurements due to winter stratosphere temperature variations. In general, this sensor provides improved accuracy over those flown on previous missions.

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