Device for eliminating low frequency noise from a transmission system, in particular 1/f noise in a homodyne radar receiver
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United States of America Patent
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-
Nov 24, 1987
Grant Date -
N/A
app pub date -
Dec 3, 1985
filing date -
Dec 6, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Device for eliminating the noise in 1/f from a Doppler radar comprising in the HF emitting system, a phase coder introducing, at frequency PRF/2 a phase shift of 0 and .pi. alternately, and in the receiving system, after the receiver, a decoder, or gain inverter progrmmable between -1 and +1, acting, in the same manner as the coder, upon the receiving signal and comprising a low-pass filter downstream from the decoder for eliminating the noise in 1/f, that appears at PRF/2, the device being applied to a ground surveying radar.
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