Wide-swath space-borne SAR using a quad-element array
Wide-swath space-borne SAR using a quad-element array
- Author(s): G. D. Callaghan and I. D. Longstaff
- DOI: 10.1049/ip-rsn:19990126
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- Author(s): G. D. Callaghan 1 and I. D. Longstaff 1
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View affiliations
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Affiliations:
1: Department of Computer Science and Electrical Engineering, University of Queensland, Brisbane, Australia, and also with the Cooperative Research Centre for Sensor Signal and Information Processing, SPRI Building, Technology Park, The Levels, 5095 Adelaide, Australia
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Affiliations:
1: Department of Computer Science and Electrical Engineering, University of Queensland, Brisbane, Australia, and also with the Cooperative Research Centre for Sensor Signal and Information Processing, SPRI Building, Technology Park, The Levels, 5095 Adelaide, Australia
- Source:
Volume 146, Issue 3,
June 1999,
p.
159 – 165
DOI: 10.1049/ip-rsn:19990126 , Print ISSN 1350-2395, Online ISSN 1359-7086
The authors describe an array-based approach to increasing the swath width of space-borne synthetic aperture radar beyond the limit normally imposed by ambiguity. The nulls of a quad-element rectangular array are used to suppress returns from range and azimuth ambiguities, allowing the swath to be increased by a factor of approximately four. A conceptual design is presented, based on ERS-1, that gives a swath extending from 250 km off nadir to over 700 km, with a blind region centred at 500 km. Some adaptive techniques for steering the nulls are discussed.
Inspec keywords: radar interference; adaptive signal processing; remote sensing by radar; interference suppression; radar signal processing; array signal processing; planar antenna arrays; spaceborne radar; adaptive radar; synthetic aperture radar; radar antennas
Other keywords:
Subjects: Signal processing and detection; Geophysical techniques and equipment; Radar equipment, systems and applications; Antenna arrays
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