The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1987
Filed:
Jun. 13, 1985
Dieter Sodeikat, Baierbrunn, DE;
Abstract
The invention is directed to a method for determining the anomaly portion the output signal of a zero-seeking earth-horizon sensor for a geostationary satellite. The horizon sensor comprises a chopper disk operated with constant frequency, which chopper disk pictures the image of oppositely located earth horizons on a common infrared detector. When the thermal radiation of the two earth horizons is different the anomaly portion contained in the detector output signal can be determined in that the off-course signals are measured for different amplitudes of the chopper disk. Since the anomaly-dependent portion in the detector output signal depends on this chopper amplitude, correcting amounts can be determined for the measured values corresponding to the anomaly portion.