A csar ground moving target refocusing imaging method
A technology of ground moving target and imaging method, applied in the field of synthetic aperture radar ground moving target indication, can solve the problems of complex azimuth and distance coupling, increasing the difficulty of refocusing imaging, and difficult to accurately obtain motion parameter information, etc.
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[0084] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0085] figure 1 It is a schematic diagram of the application scene of the present invention, in which the radar platform flies along a circle at a speed of The beam is always pointed to the detection area, and the moving target (car) in the detection area is observed for a long time.
[0086] figure 2 It is a schematic diagram of the observation geometry under the sub-aperture, and a scattering point of a moving target is selected as a reference point for motion compensation.
[0087] image 3 It is a flowchart of the present invention. A ground moving target refocusing method suitable for CSAR, comprising the following steps:
[0088] S1. Receive the radar echo signal of the moving target and perform preprocessing. Preprocessi...
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