Tracking radar system

Details Tracking radar system Tracking radar system

1981-10-02

1984-09-18

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5NQ, G01S 744

Patent

active

044727186

ABSTRACT:
A tracking radar system which includes a variable frequency oscillator for supplying to a vertical antenna array an oscillation frequency which is changed for each of a number of pulses transmitted from the antenna array. The antenna array transmits an electric wave toward a target at a low altitude and receives an echo from the target. An electronic computer estimates an elevation angle of the target from the echo received by the antenna array according to array aperture sampling technique for each pulse. An averaging circuit averages those estimated elevation angles of the target to provide its elevation angle. Alternatively, the oscillation frequency may change for each of finite time intervals.

REFERENCES:
patent: 3757326 (1973-09-01), White
patent: 3795913 (1974-03-01), Kosowsky et al.
patent: 3827049 (1974-07-01), van Staaden et al.
patent: 3854135 (1974-12-01), White
patent: 4034374 (1977-07-01), Kruger
patent: 4060807 (1977-11-01), Barton
patent: 4163975 (1979-08-01), Guilhem et al.
patent: 4316191 (1982-02-01), Sawatari et al.
F. G. Willwerth and I. Kupiec, "Array Aperture Sampling Technique for Multipath Compensation", Microwave Journal, Jun. 1976, pp. 37-39.
J. E. Howard, "A Low Angle Tracking System for Fire Control Radars", IEEE Int'l Radar Conference Record 1975, pp. 412-417.
I. Kupiec, "Experimental Verification of the Performance of the Aperture Sampling Technique", Technical Note 1975-45, Lincoln Laboratory, MIT, Sep. 1975, AD-AO16 779.

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