Synthetic aperture radar polar coordinates format image-forming method based on variable metric principle
A technology of synthetic aperture radar and polar coordinate format, which is applied in the directions of radio wave reflection/re-radiation, utilization of re-radiation, measurement devices, etc., and can solve problems such as the influence of PFA algorithm calculation efficiency
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[0063] The present invention will be further explained in detail below in conjunction with the accompanying drawings and specific embodiments.
[0064] In the present invention, the SAR system works in the medium squint mode, and the antenna moves with a fixed forward speed v, then the PFA algorithm based on the PCS principle described in the present invention can be applied to perform imaging processing on the echo signal, using two-dimensional separation distance, Azimuth variable scaling (scaling) replaces the distance and azimuth interpolation in the traditional PFA algorithm to achieve resampling.
[0065] The synthetic aperture radar polar coordinate format imaging algorithm based on the variable-scale principle proposed by the present invention is theoretically verified through simulation experiments, and the theoretical analysis and simulation experiment results prove the effectiveness of the present invention. The radar parameters are shown in Fig. 7.
[0066] In the...
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