Continuous wave FM tone ranging radar with predetection averagin

Details Continuous wave FM tone ranging radar with predetection averagin Continuous wave FM tone ranging radar with predetection averagin

1976-03-12

1977-05-17

Farley, Richard A.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 9, G01S 924

Patent

active

040245403

ABSTRACT:
A CW FM TR radar receiver responsive to a local tone modulation source and a return signal having a carrier frequency modulated by the tone is particularly adapted to handle a return signal containing different returns derived from multiple targets and/or via multipath. An FM demodulator responds to the return signal to derive a demodulated signal containing the tone frequency. The demodulated tone frequency signal is averaged over a time interval of many cycles of the tone. The phases of the average tone frequency component and the tone of the local modulation source are compared to enable an indication of the range and velocity of a dominant target contributing to the return signal to be derived.

REFERENCES:
introduction to Radar Systems, M. I. Skolnik, McGraw-Hill, 1962, Chapt. 3, pp. 89-90.

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