Control systems for radar receivers

Details Control systems for radar receivers Control systems for radar receivers

1980-07-02

1983-01-25

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 7A, G01S 734

Patent

active

043706525

ABSTRACT:
An echo ranging weather radar system in which the bandwidth B of the radar receiver is made roughly equal to the bandwidth of the frequency spectrum of at least some expected weather echoes. In one embodiment, B T.sub.R is made equal to .alpha. during a time interval corresponding to a range increment at maximum range and during an earlier period corresponding to lower ranges, is varied inversely with range, where T.sub.R is the duration of an echo pulse which would be produced by a target of reference size, and .alpha. is a constant such as 1.2. In another embodiment, B is varied according to the duration T of actually received echo signals so as to set BT.congruent..alpha. during each echo reception interval, for different values of T. The gain of the receiver also may be varied with time.

REFERENCES:
patent: 2435960 (1948-02-01), Fyler
patent: 4169263 (1979-09-01), Hooker, Jr.

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