Spaceborne synthetic aperture radar systems are severely constrained to a narrow swath by ambiguity limitations. Here a vertically scanned-beam synthetic aperture system (SCANSAR) is proposed as a solution to this problem. The potential length of synthetic aperture must be shared between beam position, so the along-track resolution is poorer. The length of the real aperture is independently traded against the number of scanning positions. Design curves and equations are presented for spaceborne SCANSARs for altitudes between 400 and 1400 km and inner angles of incidence between 20 and 40 deg. When the real antenna is approximately sqaure, it may also be used for a microwave radiometer.
Scanning spaceborne synthetic aperture radar with integrated radiometer
Satelliten-Absuchradar mit synthetischer Apertur und eingebautem Radiometer
IEEE Transactions on Aerospace and Electronic Systems ; 17 , 3 ; 410-421
1981
12 Seiten, 12 Bilder, 2 Tabellen, 16 Quellen
Article (Journal)
English
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