Airborne super-continuum laser 50-waveband hyperspectral radar system

Abstract

The invention discloses an airborne super-continuum laser hyperspectral laser radar system (with 50 wave bands and 400-900 nanometers), which comprises a comprehensive control system, a storage unit,a super-continuum spectrum laser system, an emission optical system, a reflector, a scanning system, a receiving optical system, a super-continuum hyperspectral laser detection system, an area array CCD camera and the like. The working principle is that the comprehensive control system controls the super-continuum spectrum laser system to emit continuous hyperspectral pulse laser (hereinafter referred to as 'laser'); the emission optical system expands and collimates laser beams, the scanning system transmits laser to the surface of a ground object, the reflected laser is received by the scanning system, transmitted to the receiving optical system and focused to the hyperspectral laser detection system, and laser hyperspectral and three-dimensional space data are output and stored in the storage unit together with high-resolution multispectral data. The system has the function of simultaneously acquiring hyperspectral (50 wave bands, 400-900 nanometers of wave spectrum coverage and 10nanometers of spectral resolution) and spatial three-dimensional (ground resolution is superior to 0.5 meter) data of a ground surface object all day long.

Description

technical field [0001] The present invention relates to airborne laser radar (Light Detection And Ranging, referred to as LiDAR), in particular to a laser hyperspectrum (50 bands, spectrum coverage 400-900 nanometers, spectral resolution 10 nanometers) and spatial three-dimensional data (ground resolution better than 0.5 meters) radar system. [0002] technical background [0003] At present, hyperspectral imaging technology can obtain rich spectral data on the surface of objects, but lacks spatial three-dimensional data of ground objects, especially the spatial distribution data in the vertical direction. On the other hand, laser radar (LiDAR) can quickly, directly, and accurately acquire three-dimensional space data of ground objects, but the current international radar imaging systems usually use laser light sources fixed at a specific wavelength, resulting in the inability to acquire Hyperspectral data of the ground surface. Internationally, the traditional hyperspectra...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the above-mentioned traditional hyperspectral uses the sun as the light source, which leads to the inability to obtain all-day hyperspectral data, the inability to obtain the vertical parameters of the ground object space, and the laser radar can only obtain the three-dimensional data of the ground object space and the single-band laser re...

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