Radar image processing device, radar image processing method, and radar image processing program

A radar image processing method comprising:

• estimating a type of a pixel as a target pixel, among a type of a pixel caused by a main lobe, a type of a pixel due to a sidelobe, and a type of any other pixel, at each pixel position of a two-dimensional map image of an observed reflected wave intensity;
• replacing a pixel value of the pixel caused by the main lobe and a pixel value of the pixel due to the sidelobe with pixel values generated in pixel value interpolation processing based on the estimated type of each pixel to generate a first corrected image;
• applying speckle suppression processing to the first corrected image to generate a second corrected image;
• and
• generating an output image, in which speckle and sidelobes are suppressed, by using the two-dimensional map image, the second corrected image, and the type of each pixel.

A non-transitory computer readable information recording medium storing a radar image processing program, when executed by a processor, perform:

• estimating a type of a pixel, among a type of a pixel caused by a main lobe, a type of a pixel due to a sidelobe, and a type of any other pixel, at each pixel position of a two-dimensional map image of an observed reflected wave intensity;
• replacing a pixel value of the pixel caused by the main lobe and a pixel value of the pixel due to the sidelobe with pixel values generated in pixel value interpolation processing based on the estimated type of each pixel to generate a first corrected image;
• applying speckle suppression processing to the first corrected image to generate a second corrected image;
• and
• generating an output image, in which speckle and sidelobes are suppressed, by using the two-dimensional map image, the second corrected image, and the type of each pixel.