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Abstract. In order to achieve high-resolution pictures of the ground, it
is necessary to achieve high resolution along the radar beam
(range resolution), and across the beam (cross-range resolution). High range
resolution is achieved by the use of pulse compression. Cross-range
resolution is a function of antenna beamwidth and target range.
High cross-range resolution, therefore, is achieved by producing a radar
antenna with a very narrow effective beamwidth. To achieve this,
a real antenna would have to be made impracticably large.
The solution is to find some way of synthesising the
performance of a very large antenna out of one that
is physically far smaller. This review article outlines the principles
behind Synthetic Aperture Radar, and discusses the processing techniques used
in the production of the final imagery. The technique of
Inverse SAR (ISAR) is also briefly discussed.
Related topics:
synthetic aperture radar, radar, surveillance and target acquisition
View first page of "Picton: Synthetic Aperture Radar"
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