Digital radar signal processor

Details Digital radar signal processor Digital radar signal processor

1976-04-30

1977-12-06

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5DP, 343 73, 343 9, G01S 914

Patent

active

040620123

ABSTRACT:
A radar signal processor employs digital circuits to provide two adaptive resholds which act to reject clutter and noise. A digital constant false alarm unit serves to set the first threshold level by comparing an expected false alarm number with a number of noise pulses occurring in a noise gate generated during the radar dead time. The second threshold is set by establishing a background average. The existence of a target in a particular range cell in relation to the second threshold is determined by comparing its hit count with the hit counts of two range cells proximately following it and the two range cells proximately preceding it. A target is automatically acquired in range and velocity by using a memory unit and constructing a velocity-range matrix which identifies range and velocity by pattern recognition techniques.

REFERENCES:
patent: 3460137 (1969-08-01), Ralston
patent: 3487405 (1969-12-01), Molho et al.
patent: 3500396 (1970-03-01), Lampert et al.
patent: 3699573 (1972-10-01), Andrews et al.
patent: 3701149 (1972-10-01), Patton et al.
patent: 3713149 (1973-01-01), Bruner et al.
patent: 3761922 (1973-09-01), Evans
patent: 3768097 (1973-10-01), Ziegler
patent: 3995270 (1976-11-01), Perry et al.

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