Hyperspectral three-dimensional laser radar system based on near-infrared full-waveform ranging

Abstract

The invention provides a hyperspectral three-dimensional laser radar system based on near-infrared full-waveform ranging. The hyperspectral three-dimensional laser radar system comprises a laser emission unit, a signal detection unit, a synchronous collection unit and a data processing unit, the laser emission unit comprises a super-continuum spectrum laser device, and the super-continuum spectrumlaser device is pumped by a near-infrared light source to emit a super-continuum spectrum white laser covering visible light and near-infrared light; the signal detection unit comprises a full-waveform ranging detection system based on a near-infrared waveband, a scanning galvanometer, a telescope, a spectrometer and a multi-channel detector; and the synchronous collection unit comprises a multi-channel digital delay pulse generator and controls collection of the near-infrared waveband detector and multi-channel visible light information collection, so that distance information and spectral information correspond. The hyperspectral three-dimensional laser radar system can directly and simultaneously obtain visible light and near-infrared laser spectral information and laser point cloud spatial information of a target scalar, and can be widely applied to the fields of surveying and mapping, remote sensing, target classification and recognition and the like.

Description

technical field [0001] The present invention relates to the technical field of comprehensive application of laser radar and surveying and mapping remote sensing, in particular to a hyperspectral three-dimensional laser radar system solution based on near-infrared light full-waveform ranging, which can realize the simultaneous acquisition of target ground objects based on a set of supercontinuum laser sources hyperspectral and 3D spatial information. Background technique [0002] Hyperspectral lidar technology for earth observation is an important remote sensing method to realize hyperspectral information of ground objects and 3D spatial description with high spatial resolution. Highlight the advantages. However, the traditional hyperspectral lidar solution uses a set of independent single-wavelength lidar for ranging, which increases the complexity of the system and limits the consistency of spectral information and spatial information, resulting in poor data quality and lo...

AI Technical Summary

Problems solved by technology

However, the traditional hyperspectral lidar solution uses a set of independent single-wavelength lidar for ranging, which increases the complexity of the system and limits the consistency of spectral information and spatial information, resulting in poor data quality and low precision, and image data further application

Moreover, the visible part of the supercontinuum laser in traditional hyperspectral lidar is mainly used for spectral information acquisition, while the near-infrared part with strong energy has not been fully utilized.

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