Airborne laser radar underwater detection depth simulation method and device

Abstract

The invention discloses an airborne laser radar underwater detection depth simulation method and device. Expected return of an underwater detection depth of an airborne laser radar is modeled and predicted. 1, the airborne laser radar underwater detection depth simulation device includes a transmitting module, a propagation processing module, and a receiving evaluation module; 2, different modulesinclude an input parameter design, a built-in processing design, a statistical processing design, and an evaluation output design; and 3, the transmitting module includes input of a pointing vector parameter of an optical scanner, and the input of a specification parameter of a laser radar system and an environmental parameter; the propagation processing module includes influence processing designs of an atmosphere, a sea wave, and water body scattering; and a receiving evaluation module includes result evaluation and an output design. In the invention, operation is simple, the parameter which needs to be input can be obtained in advance for evaluation, an underwater detection capability range of the radar system can be obtained in advance, cost is saved and a basis is provided for designing radar system parameters.

Description

technical field [0001] The invention relates to the field of laser radar underwater detection, in particular to a simulation method and device for predicting the underwater detection depth of an airborne laser radar system. [0002] technical background [0003] In recent years, airborne lidar (Airborne Lidar, AL) has gradually developed into a major active underwater detection technology, which conducts underwater detection by emitting blue-green band lasers that can penetrate water bodies. Airborne lidar underwater detection technology can quickly and accurately obtain near-shore water depth and underwater terrain, especially for shallow seas, islands and reefs and other areas that ships cannot reach, and has significant advantages. It has the characteristics of high precision, high resolution, flexibility, speed and efficiency, so the underwater detection depth of airborne lidar is a very important system parameter. However, there is no comprehensive evaluation of this pa...

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Problems solved by technology

[0004] For the airborne lidar underwater detection technology, due to the differences in atmospheric parameters in different weathers, the differences in sea surface waves in different climates, the differences in water quality in different sea areas and differences in the bottom of the seabed, all of which can cause different degrees of attenuation of laser light during transmission. Therefore, the detectable depth of airborne lidar in different sea areas is unknown.

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