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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Extended chirp scaling algorithm for air- and spaceborne SAR data processing in stripmap and ScanSAR imaging modes
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Extended chirp scaling algorithm for air- and spaceborne SAR data processing in stripmap and ScanSAR imaging modes

机译:在条带图和ScanSAR成像模式下用于机载和星载SAR数据处理的扩展线性调频缩放算法

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摘要

Presents a generalized formulation of the extended chirp scaling (ECS) approach for high precision processing of air- and spaceborne SAR data. Based on the original chirp scaling function, the ECS algorithm incorporates a new azimuth scaling function and a subaperture approach, which allow an effective phase-preserving processing of ScanSAR data without interpolation for azimuth geometric correction. The azimuth scaling can also be used for automatic azimuth coregistration of interferometric image pairs which are acquired with different sampling distances. Additionally, a novel range scaling formulation is proposed for automatic range coregistration of interferometric image pairs or for improved robustness for the processing of highly squinted data. Several simulation and processing results of air- and spaceborne SAR data are presented to demonstrate the validity of the proposed algorithms.
机译:提出了扩展线性调频比例缩放(ECS)方法的广义公式,用于航空和星载SAR数据的高精度处理。 ECS算法基于原始的线性调频缩放功能,结合了新的方位角缩放功能和子孔径方法,可以对ScanSAR数据进行有效的相位保留处理,而无需内插以进行方位角几何校正。方位角缩放还可用于以不同采样距离获取的干涉图像对的自动方位角对准。另外,提出了一种新颖的距离缩放公式,以用于干涉图像对的自动距离配准或用于处理高斜视数据的改进的鲁棒性。提出了几种空天SAR数据的仿真和处理结果,以证明所提算法的有效性。

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