Unfocussed signal processing apparatus for a synthetic aperture

Details Unfocussed signal processing apparatus for a synthetic aperture Unfocussed signal processing apparatus for a synthetic aperture

1993-10-05

1995-01-10

Sotomayor, John B.

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

Synthetic aperture radar

342189, G01S 1390

Patent

active

053811526

ABSTRACT:
In a rotating antenna synthetic aperture radar, a method and apparatus for unfocussed signal processing for the correlation of the received signals by means of the reference functions. In unfocussed signal processing, only the main portion of the receiving signal S.sub.E is used, in which the phase shift is smaller than or equal to 90.degree. for the go-and return-path of the signal. A simplified window function is used as a reference function whose width also corresponds to the main portion of the received signal. Preferably, the in-phase and quadrature component (I.sub.r, Q.sub.r) of the window function r are selected to be identical.

REFERENCES:
patent: 4638315 (1987-01-01), Raven
patent: 4737788 (1988-04-01), Kennedy
patent: 5017922 (1991-05-01), Klausing et al.
patent: 5093649 (1992-03-01), Johnson

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