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| Spaceborne/Airborne Hybrid Sliding Spotlight Bistatic SAR Range-Doppler Imaging Algorithm |
| Zhou Fang Sun Guang-cai Xing Meng-dao Tang Yu Bao Zheng |
| National Lab of Radar Signal Processing, Xidian University, Xi'an 710071, China |
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Abstract A new range-Doppler imaging algorithm is presented for processing bistatic Synthetic Aperture Radar (SAR) data acquired in the hybrid spaceborne/airborne sliding spotlight SAR configuration. This paper firstly presents the 2-D point target spectrum by using the series reversion, and then analyses the spectrum with the space-variant in range. Based on the previous discussions, the algorithm overcomes the spectrum folding of the azimuth raw signal with a SPECtral ANalysis (SPECAN) process, and focuses the full image in the Doppler domain. Without sub-aperture and interpolation, this algorithm is great in computational efficiency. Simulation results confirm the validity of the imaging algorithm.
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Received: 29 December 2010
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Corresponding Authors:
Zhou Fang
E-mail: xdzhoufang@163.com
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2011, Vol. 33 
