Correcting errors in crossfeed radar systems
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United States of America Patent
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-
Jul 19, 1994
Grant Date -
N/A
app pub date -
Dec 21, 1990
filing date -
Dec 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for correction errors in radar systems that operate using a crossfeed principle (CFR), in which echo signals are directly received from flying objects, such as an aircraft. In particular, the present invention is used in connection with low-flying objects, in which radar signals are indirectly reflected from the surface of the earth to an antenna of the radar system. Correction terms are determined and weighted, using correction factors, so as to improve the capability of the crossfeed radar system to accurately determine the exact elevation of the flying object. The correction factors that are used to improve the accuracy of the radar system are based upon sea state numbers, or Beaufort numbers, which vary in relation to the shape and/or structure of the reflecting surface.
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