SAR运动补偿误差分析

2012 IEEE International Conference on Imaging Systems and Techniques Proceedings Pub Date : 2012-07-16 DOI:10.1109/IST.2012.6295562

Y. Mao, M. Xiang, Lideng Wei, Yin-wei Li, Wen Hong

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引用次数: 9

摘要

在合成孔径雷达(SAR)运动补偿过程中，残留的未补偿运动误差会导致SAR图像的退化，这些误差主要是由航迹和目标的定位不准确引起的。通过对SAR运动补偿方法的分析，以及航迹和目标定位误差对SAR运动补偿的影响，提出了SAR运动补偿剩余误差的计算模型。根据该模型，残差主要取决于斜距误差、多普勒质心误差和目标高度误差。该模型的计算结果与实际图像质量基本吻合。

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Error analysis of SAR motion compensation

During Synthetic Aperture Radar (SAR) motion compensation processing, the residual uncompensated motion errors may degrade SAR images, and these errors mainly result from the positioning inaccuracies of the track and target. By analyzing SAR motion compensation method and the effect of the track and target positioning inaccuracies, this paper presents a model to calculate the residual uncompensated motion errors. According to the model, the residual errors mainly depend on the slant range error, Doppler centroid error, and the target height error. The computed results by the proposed model accord closely with the actual image quality.

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2012 IEEE International Conference on Imaging Systems and Techniques Proceedings

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