Mathematics – Logic
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980itaes..16..233j&link_type=abstract
IEEE Transactions on Aerospace and Electronic Systems, vol. AES-16, Mar. 1980, p. 233-238.
Mathematics
Logic
Attitude Indicators, Horizon Scanners, Infrared Detectors, Instrument Errors, Remote Sensors, Satellite Attitude Control, Bolometers, Error Analysis, Infrared Scanners, Infrared Telescopes, Meteorological Satellites
Scientific paper
The accuracy of presently available IR horizon sensors is not sufficient to meet the stringent attitude sensing and control requirements for future remote sensing and meteorological satellites. The different sources of error in a horizon sensor are analyzed. The accuracy of the sensor is presently limited by the detector noise. Use of HgCdTe in place of an immersed bolometer detector, which is used in conventional horizon sensors eliminates many of the errors. Hence, it is possible to design an ultimate IR horizon sensor whose accuracy is limited only by the uncertainty of the earth horizon. Comparison of performances of the two types of detectors for horizon sensing is given and possible configurations of sensor using this detector are discussed.
Alex T. K.
Jain Y. K.
Kalakrishnan B.
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