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 reflection data. The heterogeneous data obtained by traditional hyperspectral and laser radar are difficult to accurately register and other problems. The present invention designs an airborne supercontinuum laser hyperspectral radar system (50 bands, 400-900 nanometers). The airborne supercontinuum laser hyperspectral radar system can actively acquire ground object laser hyperspectral and spatial 3D data all day long

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