Velocity discrimination radar

Details Velocity discrimination radar Velocity discrimination radar

1975-04-30

1987-09-29

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

For correlation

342108, G01S 1304

Patent

active

046971866

ABSTRACT:
A radar method and apparatus which utilizes a first frequency signal modued by a first modulating signal and a second frequency signal modulated by a second modulating signal, the first and second frequencies being different and the first and second modulating waveforms having different periods of repetition. The radar receiver separates the return radar signal into the component due to the first frequency signal and the component due to the second frequency signal. Both components are then heterodyned with their respective frequency signals. Each modulating waveform is subjected to a plurality of delays and each component is subsequently correlated with each of its respective delayed modulating waveforms. A target is recognized when the correlated first frequency component exceeds a predetermined threshold and simultaneously the correlated second frequency component exceeds a predetermined threshold.

REFERENCES:
patent: 3140486 (1964-07-01), Gillmer
patent: 3208065 (1965-09-01), Gutleber et al.
patent: 3337870 (1967-08-01), Allen et al.
patent: 3374478 (1968-03-01), Blau
patent: 3518415 (1970-06-01), Gutleber
patent: 3882444 (1975-05-01), Robertson

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