Advanced Spaceborne SAR Systems with Planar Antenna
Villano M, Krieger G, Moreira A (2017)
Publication Type: Conference contribution
Publication year: 2017
Publisher: Institute of Electrical and Electronics Engineers Inc.
Edited Volumes: 2017 IEEE Radar Conference, RadarConf 2017
Pages Range: 0152-0156
Conference Proceedings Title: IEEE Radar Conference (RadarCon)
ISBN: 9781467388238
URI: https://elib.dlr.de/112501/
DOI: 10.1109/RADAR.2017.7944188
Abstract
Synthetic aperture radar (SAR) remote sensing allows high-resolution imaging independent of weather conditions and sunlight illumination and is therefore very attractive for the systematic observation of dynamic processes on the Earth′s surface. Conventional spaceborne SAR systems are, however, limited in that a wide swath can only be imaged at the expense of a degraded azimuth resolution. This limitation can be overcome by using SAR systems with multiple receive subapertures displaced in along-track, ScanSAR systems with multiple azimuth channels, or multiple elevation beam SAR systems, which use digital beamforming (DBF) on receive for simultaneous mapping of multiple subswaths. In the latter case, a combined transmit-receive planar phased array antenna can be employed, using phase-only tapering to form a wide transmit beam, while exploiting all the available power and ensuring the best possible efficiency of the high power transmit modules. A parametric closed-form expression for the phase tapers can be analytically derived, which result in a wide transmit beam optimized for noise and ambiguity performance.
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Germany (DE)How to cite
APA:
Villano, M., Krieger, G., & Moreira, A. (2017). Advanced Spaceborne SAR Systems with Planar Antenna. In IEEE Radar Conference (RadarCon) (pp. 0152-0156). Institute of Electrical and Electronics Engineers Inc..
MLA:
Villano, Michelangelo, Gerhard Krieger, and Alberto Moreira. "Advanced Spaceborne SAR Systems with Planar Antenna." Proceedings of the 2017 IEEE Radar Conference, RadarConf 2017 Institute of Electrical and Electronics Engineers Inc., 2017. 0152-0156.
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