A three-dimensional lidar-based wave hydrodynamic monitoring method and system in the breaking wave zone

Abstract

The invention discloses a three-dimensional laser radar-based method for monitoring wave hydrodynamics in a breaking wave zone and a system thereof, aiming at solving the technical problem in the prior art that it is difficult to monitor wave hydrodynamics in a breaking wave zone. The method includes: using three-dimensional laser radar to obtain three-dimensional coordinates of multiple ocean surface monitoring points; obtaining the wave surface water level time series of each ocean surface monitoring point according to the three-dimensional coordinates of the ocean surface monitoring points; according to the wave surface water level time series of the ocean surface monitoring points The sequence calculates the wave skewness, waveform asymmetry value and variance of the free water surface elevation gradient, and judges the breaking point of the wave in the wave breaking zone. The system includes a data acquisition module, a wave monitoring module, a monitoring display module, a data storage module, a communication module and a power supply module. The invention can realize high-precision and high-resolution continuous monitoring of wave hydrodynamic elements in the breaking wave zone.

Description

technical field [0001] The invention relates to a three-dimensional laser radar-based wave hydrodynamic monitoring method and system in a breaking wave zone, belonging to the technical field of ocean observation. Background technique [0002] The breaking wave zone is the most active area of ​​nearshore waves, in which there are wave propagation deformation and breaking phenomena, and the wave propagation deformation and breaking have important influence on the beach climbing, shoreline evolution and marine safety, so Obtaining the wave surface data of the breaking wave zone is particularly important. However, it is still difficult to obtain high-resolution data of the wave breaking zone through in-situ observations due to the rapid breaking process of waves and the constant change of breaking points over time. [0003] Traditional marine monitoring methods mainly include ship monitoring, buoy monitoring and radar monitoring. Ship monitoring consumes manpower and material r...

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Problems solved by technology

[0004] In order to solve the problem of difficult wave hydrodynamic monitoring in the breaking wave zone in the prior art, the present invention proposes a three-dimensional laser radar-based wave breaking zone wave hydrodynamic monitoring method and system to achieve high-precision, high-resolution wave breaking Continuous monitoring of hydrodynamic elements with waves

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