Sonar signal reflector

Abstract

The invention discloses a sonar signal reflector, which is in a centrosymmetric structure. The sonar signal reflector consists of 12 same reflection units, wherein each reflection unit provides two reflection surfaces which can reflect a sound signal from any direction back along a coming direction. The reflector has the advantages of simpleness in processing, small size, light weight, convenience in deployment and obvious signal enhancement effect, and can be used for replacing a conventional target for the sonar training. Meanwhile, a plurality of reflectors can be combined into a specific pattern to serve as a specific reflector so as to improve the training efficiency.

Description

Technical field [0001] The invention relates to a reflector, in particular to a sonar signal reflector, belonging to the technical field of sonar detection and positioning. Background technique [0002] At present, sonar is more and more widely used in underwater terrain exploration, navigation channel survey, and underwater security. But the sonar image is very different from the optical image. When a large number of users first contact the sonar, it is difficult to judge the target based on the sonar image. In order to improve the user's ability to discern images, generally spherical or cylindrical targets are placed, and the targets are repeatedly observed through sonar. However, even after a long period of training, sonar interpretation personnel will still be confused. The main reason is that although the reflection characteristics of the spherical target are relatively stable, it cannot reflect the target contour; and the target posture of the cylindrical target is unknown...

AI Technical Summary

Problems solved by technology

However, even after long-term training, sonar interpreters will still be confused. The main reason is that although the reflection characteristics of spherical targets are relatively stable, they cannot reflect the target outline; while the target attitude of cylindrical targets is unknown underwater. Observed from different directions due to specular reflection, the difference is large

[0003] Sonar detection feeds back the reflection signal of the target surface. The reflection surface of the same target in different directions is actually inconsistent. When the target needs to be positioned with high precision, the scale of the target will bring additional errors to the positioning.

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