Angular discrimination process and device for radar
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United States of America Patent
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-
Feb 20, 1990
Grant Date -
N/A
app pub date -
Jul 2, 1987
filing date -
Mar 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a process and device for the angular discrimination of targets by airborne radar, the angular position of a point on the ground is ascertained as a function of the Doppler frequency of an echo signal relating to the point under consideration, as determined by passband filtering the echo signals. The Doppler frequencies are selected by a bank of filters and an angular determination is made by analyzing signals including a signal representing the position in the bank of that filter selecting the Doppler frequency of the echo signal, and a reference frequency subject to closed loop control and representing the true Doppler frequency of the ground. Means are provided for maintaining data relating to the position and the range of the target constant during the process of analysis.
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