GA algorithm-based shallow water multi-beam wrinkle error automatic correction method

Abstract

The invention discloses a GA algorithm-based shallow water multi-beam wrinkle error automatic correction method, and belongs to the technical field of multi-beam sounding post-processing. The method comprises the following steps: firstly, on the basis of keeping the linear characteristic of a conventional beam homing model, improving and perfecting the independence of the model, and considering the independence of a transmitting transducer and a receiving transducer, so that the accuracy of the sounding point position and the water depth calculation is improved; then, from the perspective of multi-beam sounding error propagation, parameterization of time delay, introducing the scale error, axial deviation and lever arm error into the improved model, and constructing an error correlation model; and finally, dynamically searching an optimal estimated value of a corresponding error parameter by using a GA algorithm by taking a seabed flat region fitting optimal plane as a constraint so as to realize automatic correction of the wrinkle error. According to the method, fine and automatic processing of multi-beam sounding dynamic errors is realized, and the problems that coupling among the errors is not taken into consideration during wrinkle error correction, and non-automation is realized are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of post-processing of multi-beam bathymetry, and in particular relates to an automatic correction method for shallow-water multi-beam fold errors based on GA algorithm. Background technique [0002] In actual work, affected by the dynamic environment of the ocean, the wrinkle error caused by the imperfect integration between the multi-beam transducer and the motion sensor is difficult to avoid in most cases. Maps or topographical maps without getting too much attention. With the increasing demand for high-precision and high-resolution mapping, this type of error has become a problem that must be solved. Although the existing technologies have their own advantages in performance, most of them correct errors based on mathematical statistical laws. Such technologies are highly subjective, ignore the coupling between errors, and mainly use manual adjustments, which fail to give automated processing methods. ...

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a shallow water multi-beam wrinkle error automatic correction method based on the GA algorithm to solve the problem that the multi-beam wrinkle error correction method in the prior art ignores the coupling between errors and is not automatic

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