Method for automatically searching point of synthetic aperture radar dot-matrix target image data
A synthetic aperture radar and target image technology, applied in the field of signal processing, can solve the problems of uneven distribution of point target intensity, difficulty in distinguishing point targets, etc., to overcome the non-uniform characteristics of point target amplitude, reduce workload, and achieve point finding accuracy. high effect
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[0098] Table 1 Radar parameters
[0099]
[0100] According to the radar parameters given in Table 1, the complex data size of the original SAR image is 8192×16384 complex matrix, which has 8192 sampling points in azimuth direction and 16384 sampling points in range direction. The complex matrix is recorded as
[0101]
[0102] Step 1: Antenna pattern weight correction;
[0103] Obtain the slant distance R corresponding to each range gate j (j=1, 2, 3...16384) j :
[0104] R j = 7071.068 + ( j - 1 ) · 3 × 10 8 2 × 400 × 10 6
[0105] Get the slope dist...
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