Airborne supercontinuum laser 50-band hyperspectral radar system

Abstract

The invention discloses an airborne supercontinuum laser hyperspectral laser radar system (50 bands, 400-900 nanometers), comprising an integrated control system, a storage unit, a supercontinuum laser system, a transmitting optical system, a mirror, a scanning system, a receiving Optical system, supercontinuum hyperspectral laser detection system, area array CCD camera, etc. Its working principle is that the integrated control system controls the supercontinuum laser system to emit continuous hyperspectral pulsed laser (hereinafter referred to as "laser"), the emitting optical system collimates the laser beam expansion, the scanning system emits the laser to the surface of the ground, and the reflected laser is captured The scanning system receives, transmits to the receiving optical system, focuses on the hyperspectral laser detection system, outputs laser hyperspectral and three-dimensional spatial data, and stores them in the storage unit together with high-resolution multispectral data. Its function is to simultaneously acquire hyperspectral (50 bands, spectrum coverage 400-900 nanometers, spectral resolution 10 nanometers) and spatial three-dimensional (ground resolution better than 0.5 meters) data of surface objects at the same time throughout the day.

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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