Solution for Two-Dimensional Spectrum Analytical Expression of Spaceborne/Airborne Hybrid BSAR

Liu  Zhe; Yang  Jian-Yu; Zhang  Xiao-Ling; PiYi-Ming

doi:10.3724/SP.J.1146.2007.00297

Volume 30 Issue 9

Jan. 2011

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Article Navigation > Journal of Electronics & Information Technology > 2008 > 30(9): 2073-2076

Liu Zhe, Yang Jian-Yu, Zhang Xiao-Ling, PiYi-Ming. Solution for Two-Dimensional Spectrum Analytical Expression of Spaceborne/Airborne Hybrid BSAR[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2073-2076. doi: 10.3724/SP.J.1146.2007.00297

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Liu Zhe, Yang Jian-Yu, Zhang Xiao-Ling, PiYi-Ming. Solution for Two-Dimensional Spectrum Analytical Expression of Spaceborne/Airborne Hybrid BSAR[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2073-2076. doi: 10.3724/SP.J.1146.2007.00297

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Solution for Two-Dimensional Spectrum Analytical Expression of Spaceborne/Airborne Hybrid BSAR

doi: 10.3724/SP.J.1146.2007.00297

Received Date: 2007-02-26
Rev Recd Date: 2007-07-27
Publish Date: 2008-09-19

Abstract

Abstract

Two-dimensional spectrums analytical expression is the basis of the frequency domain imaging algorithm for SAR system. A solution for the approximated two-dimensional spectrums analytical expression of spaceborne/airborne hybrid BSAR is presented. To overcome the difficulty of resolving analytical solution for the systems stationary phase point, the two-dimensional spectrums phase is two-order expanded around the point, which is not only in the neighborhood of the systems corresponding stationary phase point but also can be obtained analytically. Thus the spaceborne/airborne hybrid BSAR system responses approximated spectrum is pretty close to the real one and can be expressed analytically. Taking TerraSAR-X as transmitter and PAMIR as receiver, the phase error caused by the approximation is simulated for different point targets in the image scene, and the simulated echo of point target is focused by the approximated two-dimensional spectrum. The simulation results demonstrate the validity of the proposed solution.
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References

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