Continuous wave radar system
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United States of America Patent
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-
Oct 10, 2000
Grant Date -
N/A
app pub date -
May 20, 1988
filing date -
May 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A continuous wave radar system, for example a radar altimeter, comprises a memory (24) for storing an array of return signals, means for performing a time integration (25) of the array to improve its signal-to-noise ratio, means responsive to the time integrated array (26) to compare (30) the noise level (28) thereof with the peak level (27) thereof to obtain the signal-to-noise ratio of the array, and control means (31) responsive to the signal-to-noise ratio thus obtained to set either the period over which the said time integration is performed for each renewal of the time integrated array (26), or the power of the transmitted signal, of both, in accordance with predetermined criteria to the minimum necessary to ensure an adequate signal-to-noise ratio.
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