Multi-PRF signal processor system

Details Multi-PRF signal processor system Multi-PRF signal processor system

1976-06-01

1977-11-08

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 171PF, G01S 944

Patent

active

040578003

ABSTRACT:
A multi PRF doppler radar processor system for airborne target search radar preferably using five PRF's. The received signal is processed through a bank of doppler filters, and the filter number and PRF of every target indication in a single range band is memorized. When indications have been made at two different PRF's, the first and second data sets are processed. The first data set is used to determine a doppler band shift value, .DELTA.f, required to bring the center of a velocity band, A.sub.1, to the center of the filter band, and this same .DELTA.f is applied to the second data set, from which the corresponding velocity band, A.sub.2 is determined. The velocity bands A.sub.1 and A.sub.2 are converted by use of the Chinese Ramainder Theorem to an unambiguous velocity band Au. The original frequency shift .DELTA.f is applied to the center frequency of Au to determine the unambiguous doppler frequency of the target.

REFERENCES:
patent: 3603999 (1971-09-01), Palleiko
patent: 3706990 (1972-12-01), Carre
patent: 3787848 (1974-01-01), Laundry et al.
patent: 3858208 (1974-12-01), Parke et al.
patent: 3902174 (1975-08-01), Siegel

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