A Slant Range Distortion Elimination Method for Multi-beam Side Scan Sonar Based on Blind Spot Correction
A technology of side-scan sonar and blind area, which is applied in the direction of sound wave re-radiation, radio wave measurement system, utilization of re-radiation, etc. It can solve problems such as inability to accurately locate spatial coordinates, occupy image space, and trouble positioning underwater targets. Improve the display effect and avoid the effect of proportional imbalance
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[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0033] Combine figure 1 The actual basis of the method for eliminating the slant distance distortion of the multi-beam side-scan sonar image based on the blind zone correction of the present invention is: when the side-scan sonar is traveling, the sonar transmits pulse beams to the bottom of the sea on both sides, and the transducer receives the reverse of the bottom of the sea. The scattered wave is converted into image gray scale according to the echo intensity to form a two-dimensional sonar image. When the first beam returns, the weak echo formed by the water body produces a water column area. However, in actual work, the pulse beam is not vertical When launching downward, but at a certain angle, a blind zone with no data will be generated directly below the sonar, so full consideration should be given to the slope correction. When the sonar is traveling, t...
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