Synthetic aperture radar focusing

Details Synthetic aperture radar focusing Synthetic aperture radar focusing

1986-03-24

1988-02-09

Blum, Theodore M.

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

Synthetic aperture radar

342131, 342137, G01S 1389

Patent

active

047244186

ABSTRACT:
An extended depth-of-focus synthetic aperture radar (SAR) system (13) mounted on a moving platform, including a controller (120), pulse timer (83), synthesizer (105) and modulator (17) for varying the pulse rate interval (PRI) and/or the radar carrier frequency of radar pulses produced, in order to establish a radar return which, when conventionally processed, results in a SAR terrain map exhibiting extended depth-of-focus under conditions of platform acceleration. Depth of focus is established by ensuring the establishment of two or three separate, independently selected focal points in a target region of interest.

REFERENCES:
patent: 3858208 (1974-12-01), Parke et al.
patent: 4084158 (1978-04-01), Slawsby
patent: 4132989 (1979-01-01), Arens
J. DeLeon, "Sar to Map the Surface of Venus", Microwaves, (1/77, vol. 16, No. 1, pp. 12-14).

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