Range tracker utilizing spectral analysis

Details Range tracker utilizing spectral analysis Range tracker utilizing spectral analysis

1979-10-15

1981-06-02

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5SA, 343 7A, 343 14, G01S 1332

Patent

active

042714125

ABSTRACT:
A radar system transmits a signal to a target wherein the frequency is modulated with a sinusoidal modulation pattern. The difference between the actual target range and an estimate thereof is subjected to a spectral analysis wherein the spectral terms are described by Bessel functions. A second order range tracking loop, responsive to the relative magnitudes of the spectral terms, and an estimator of target radial acceleration, responsive to successive values of the spectral terms, provide components of the range estimate.

REFERENCES:
patent: 3898655 (1975-08-01), Tresselt
patent: 3987285 (1976-10-01), Perry
patent: 4014022 (1977-03-01), Weinberg
patent: 4015260 (1977-03-01), Campbell, Jr.
patent: 4053885 (1977-10-01), Tomita et al.

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