SAR雷达BP算法



his function performs a basic Backprojection operation.

The following fields need to be populated:

data.Nfft:Size of the FFT to form the range profile

data.deltaF:Step size of frequency data (Hz)

data.minF:Vector containing the start frequency of each pulse (Hz)

data.x mat:The x?position of each pixel (m)

data.y mat:The y?position of each pixel (m)

data.z mat:The z?position of each pixel (m)

data.AntX:The x?position of the sensor at each pulse (m)

data.AntY:The y?position of the sensor at each pulse (m)

data.AntZ:The z?position of the sensor at each pulse (m)

data.R0:The range to scene center (m)

data.phdata:Phase history data (frequency domain)

Fast time in rows, slow time in columns-function data = bpBasic(data)

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

　This function performs a basic Backprojection operation.

The following fields need to be populated:

　data.Nfft:Size of the FFT to form the range profile

　data.deltaF:Step size of frequency data (Hz)

　data.minF:Vector containing the start frequency of each pulse (Hz)　

　data.x mat:The x?position of each pixel (m)

　data.y mat:The y?position of each pixel (m)

　data.z mat:The z?position of each pixel (m)

　data.AntX:The x?position of the sensor at each pulse (m)

　data.AntY:The y?position of the sensor at each pulse (m)

　data.AntZ:The z?position of the sensor at each pulse (m)

　data.R0:The range to scene center (m)

　data.phdata:Phase history data (frequency domain)

　　　　　　　Fast time in rows, slow time in columns







　The output is:

　data.im final:The complex image value at each pixel





　Written by LeRoy Gorham, Air Force Research Laboratory,