Airborne laser sounding broken wind wave sea surface model construction method

Abstract

The invention discloses an airborne laser sounding broken wind wave sea surface model construction method, and belongs to the technical field of marine surveying and mapping. The method comprises the following steps: constructing an initial sea wave spectrum sea surface model based on a sea wave spectrum principle; then extracting a broken wave crest surface of the fitted sea surface by using a mass point-spring model distribution simulation method; and finally, fitting the extracted broken wave crest surface into a broken wave crest sea surface model by utilizing a broken wave sea surface fluctuation theoretical model, and fusing the sea wave spectrum sea surface model and the broken wave crest sea surface model into a complete and real instantaneous three-dimensional broken wind wave sea surface model. Through the method, the construction of the instantaneous three-dimensional broken wind wave sea surface model is realized, and the method has an important data support effect on sea surface refraction correction, sea surface abnormal point detection and depth measurement precision improvement in airborne laser depth measurement.

Description

technical field [0001] The invention belongs to the technical field of marine surveying and mapping, and in particular relates to a method for constructing an airborne laser sounding broken wind and wave sea surface model. Background technique [0002] The airborne laser sounding system has the characteristics of high measurement accuracy, high measurement point density, high work efficiency, strong mobility, and continuous measurement. It is especially suitable for rapid detection of complex terrain such as shallow water areas and areas near islands and reefs. Seamless mosaic of above and below water terrain. It is of great significance to meet the urgent needs of ocean, surveying and mapping, water conservancy, transportation, diplomacy, navy and many other aspects. The airborne laser sounding system uses a 532nm blue-green laser with strong water penetration ability as the seabed detection method. When the blue-green laser reaches the sea surface, part of the laser beam ...

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Problems solved by technology

[0003] The current mainstream sea surface fitting methods mostly use the more classic wave spectrum model. For the sea surface containing broken wind waves, the broken wind wave sea surface is not distinguished from the calm sea surface, but the same wave spectrum model is used for unified fitting. Therefore, it is necessary to solve this problem and propose a model construction method for airborne laser sounding broken wind and wave sea surface, so as to realize the accurate expression of airborne laser sounding broken wind and wave sea surface

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