Method and system for detecting and combating covered ground tar

Details Method and system for detecting and combating covered ground tar Method and system for detecting and combating covered ground tar

1985-08-19

1987-06-23

Tubbesing, T. H.

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

Synthetic aperture radar

342 61, 342189, G01S 1390

Patent

active

046756779

ABSTRACT:
A system for manned or unmanned flying bodies detects covered or hidden targets on the ground by using relatively "longwave" radar radiation for immediately attacking such ground targets, which may be covered by trees for example, but located on a strip of ground extending with a given width below the flight path of the flying body travelling in low altitude flight. Four radar receiver antennas are equally spaced from each other along the wings of the flying body and one transmitter antenna is located between two pairs of receiver antennas. The receiver signals are submitted by a fast Fourier transformation for providing a wavefront reconstruction. The so transformed, received signals are then evaluated in accordance with the known SAR principle directly as the signals are received and transformed by correlation with expected signal functions, so-called reference function, for producing a control signal for the direct or indirect discharge of a weapon.

REFERENCES:
patent: 3614778 (1971-10-01), Graham et al.
patent: 4551724 (1985-11-01), Goldstein et al.
patent: 4602336 (1986-07-01), Brown
Introduction to Radar Systems, Merrill I. Skolnik, McGraw-Hill Book Co., 0, pp. 517-529.
An Article entitled "Introduction to Fourier Optics" by Joseph W. Goodman, Depart. of Electrical Engineering, Stamford University, pp. 198-205, published by McGraw-Hill Book Co., (1968).

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