Pulse Doppler radar with variable pulse repetition frequency

Details Pulse Doppler radar with variable pulse repetition frequency Pulse Doppler radar with variable pulse repetition frequency

1984-05-24

1988-03-08

Tubbesing, T. H.

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

Determining velocity

342137, 342194, 342162, G01S 1352

Patent

active

047301899

ABSTRACT:
A pulse Doppler radar system with variable pulse repetition frequency has a coherent integrator to which the reflected pulses are supplied in order to avoid deterioration of the indication of a moving target given over-the-horizon reception. The coherent integrator subjects the reflected pulses to a simplified vectorial addition by the use of a number of filters. A precondition for the modified coherent integration is a staggering of the pulse repetition periods such that their sums formed over successive pulse repetition periods are constant, and a phase reference for the signal amplitudes is obtained such that the phase difference is equal to zero after every second pulse repetition.

REFERENCES:
patent: 3491360 (1970-01-01), Stoorvogel
patent: 3855593 (1974-12-01), Van Hijfte et al.
patent: 4040057 (1977-08-01), Cross et al.
patent: 4156876 (1979-05-01), Debuisser
M. Skolnik, Intro. to Radar Systems; pp. 29-33; (McGraw-Hill, 1980).

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