Range-gated pulse doppler radar system

Details Range-gated pulse doppler radar system Range-gated pulse doppler radar system

1978-12-26

1980-08-26

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5DP, G01S 902

Patent

active

042198127

ABSTRACT:
A range-gated radar system which includes a phase modulator that modulates n r.f. generator with a signal which may be binary coded. In a preferred embodiment, the binary signal is a periodic signal of 2.sup.N -1 bits per period. Starting at some arbitrary point in the sequence, K contiguous bits are transmitted then M contiguous bits are passed over, then K more bits are transmitted, and so on. The quantities M+K and 2.sup.N -1 have no primary factors in common. The radar system may be a doppler radar system using balanced digital processing which involves separating the upper and lower sideband components of modulation that exist in the return radar signal as a result of the motion of scatterers and subtracting them.

REFERENCES:
patent: 4124850 (1978-11-01), Frazier, Jr.

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