A Fast Method of Motion Errors Compensation for High Squint Millimeter Wave SAR

Abstract:

High squint millimeter wave SAR can be applied in missile-borne imaging seeker, but it’s very sensitive to the motion errors. Both the high squint SAR imaging algorithm and the motion errors compensation method are very important for achieving well focused SAR image. Therefore, a motion compensation method integrated with the imaging algorithm is proposed. Firstly, the expression of instantaneous squint range is given according to the imaging geometry model of high squint SAR. Then, the components of motion errors are separated and estimated, using the parameters of inertia navigation system (INS). Finally, the envelope and phase corrections are performed in high squint SAR data through the obtained motion errors. The effectiveness of the proposed approach can be verified by the imaging results of measured millimeter high squint SAR data.

• Periodical: Advanced Materials Research (Volumes 1044-1045)
• Pages: 986-990
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1044-1045.986
• Online since: October 2014
• Authors: Quan Wang*, Chao Wang, Kai Bo Cui, Wei Wei Wu, Nai Chang Yuan
• Keywords: High Squint, Millimeter Wave SAR, Motion Compensation

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