Synthetic aperture sonar motion compensation method for reducing accumulated error of DPC (Displaced Phase Center) method
A technology of synthetic aperture and cumulative error, which is applied in the direction of sound wave re-radiation, re-radiation, and measuring devices, can solve the problems of large cumulative error, limited precision, failure, etc., to reduce the problem of error accumulation, improve accuracy and The effect of robustness
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[0040] The present invention will be further described now in conjunction with accompanying drawing.
[0041] The synthetic aperture sonar motion compensation method of the present invention comprises the following steps:
[0042] Step 1), the synthetic aperture sonar receives echo signals, performs aperture division on the azimuth synthetic aperture within a complete synthetic aperture length, and obtains multiple sub-apertures, each sub-aperture contains several ping echo signals;
[0043] In this step, when dividing the sub-aperture, the size of the divided sub-aperture (that is, how many ping echoes are included in the sub-aperture) determines the resolution of the sub-aperture image, and the resolution of the sub-aperture image will affect the estimation accuracy. When the resolution of the image is too low, part of the error may be caused by insufficient resolution; when the resolution is too high, the image area is too small, and sometimes it is not possible to find sca...
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