Imaging Study of High Squint SAR Based on FMCW

Liang Yi; Wang Hong-xian; Xing Meng-dao; Bao Zheng

doi:10.3724/SP.J.1146.2007.01851

Volume 31 Issue 4

Dec. 2010

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Article Navigation > Journal of Electronics & Information Technology > 2009 > 31(4): 776-780

Liang Yi, Wang Hong-xian, Xing Meng-dao, Bao Zheng. Imaging Study of High Squint SAR Based on FMCW[J]. Journal of Electronics & Information Technology, 2009, 31(4): 776-780. doi: 10.3724/SP.J.1146.2007.01851

Citation:

Liang Yi, Wang Hong-xian, Xing Meng-dao, Bao Zheng. Imaging Study of High Squint SAR Based on FMCW[J]. Journal of Electronics & Information Technology, 2009, 31(4): 776-780. doi: 10.3724/SP.J.1146.2007.01851

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Imaging Study of High Squint SAR Based on FMCW

doi: 10.3724/SP.J.1146.2007.01851

Received Date: 2007-11-29
Rev Recd Date: 2008-05-17
Publish Date: 2009-04-19

Abstract

Abstract

Based on the differences of work mechanism between Frequency Modulated Continuous Wave (FMCW) Synthetic Aperture Radar (SAR) and Pulsed Synthetic Aperture Radar, which leads to different form of received signal, this paper establishes the model of high squint FMCW SAR echo, analyzes its characteristics, and reveals the Doppler frequency shift effect induced by the continuous motion in range direction while radar transmitting and receiving signal. Meanwhile, this paper proposes a modified RD Algorithm (RDA) for high squint FMCW SAR dechirp data, which compensates for range walk in time domain, Doppler frequency shift and range curvature in frequency domain. Point target simulation verifies the analysis and validity of the algorithm. In addition, for the Doppler frequency shift induced by the platform continuous motion, this paper also analyses its effect on imaging.

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References(1)

References

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