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Position determination systemsA system for an orbital antenna, operated at a synchronous altitude, to scan an area of a celestial body is disclosed. The antenna means comprises modules which are operated by a steering signal in a repetitive function for providing a scanning beam over the area. The scanning covers the entire area in a pattern and the azimuth of the scanning beam is transmitted to a control station on the celestial body simultaneous with signals from an activated ground beacon on the celestial body. The azimuth of the control station relative to the antenna is known and the location of the ground beacon is readily determined from the azimuth determinations.
Document ID
19760014162
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Shores, P. W. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
August 8, 2013
Publication Date
April 6, 1976
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-419747
Patent Number: NASA-CASE-MSC-12593-1
Patent Number: US-PATENT-3,949,400
Accession Number
76N21250
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MSC-12593-1|US-PATENT-3,949,400
Patent Application
US-PATENT-APPL-SN-419747

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