Single-channel synthetic aperture radar moving-target detection method based on multi-apparent subimage pair
A technology for synthetic aperture radar and moving target detection, which is applied in measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc. It can solve the problems of accumulation, lack of versatility, and inability to effectively suppress coherent noise
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[0095] The method of the present invention can be divided into 10 steps, and concrete process is as attached Figure 9 Shown:
[0096] (1) The radar platform transmits the chirp signal, receives the echo from the observed scene, and obtains the original SAR data through high-speed AD sampling;
[0097] (2) Perform range-wise pulse compression on the SAR raw data to complete the range-wise processing;
[0098] (3) Perform Fast Fourier Transform (FFT) along the azimuth direction;
[0099] (4) Perform range migration correction in the azimuth frequency domain;
[0100] (5) Azimuth spectrum division to get S R1 , S L1 , S R2 , S L2 ......S RN , S LN Etc. 2N sub-apertures;
[0101] (6) Carry out multi-view imaging to each sub-aperture, get I R1 , I L1 , I R2 , I L2 ......I RN , I LN Wait for 2N sub-views to be imaged, and follow the attached figure 1 The method shown composes N sub-image pairs;
[0102] (7) The sub-view images of each sub-image pair cancel each oth...
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