Multispectral earth observation laser radar system

Abstract

The invention relates to the technical field of remote sensing and mapping, in particular to a multispectral earth observation laser radar system. The laser radar system of the invention comprises a semiconductor, a solid laser transmitter, a laser scanner, a laser ranger, an optical receiver, a laser scanning controller, a ranger controller, a signal processing circuit and a computer; wherein an output terminal of the laser scanning controller is connected with an input terminal of the laser scanner, the semiconductor is connected with the output terminal of the solid laser transmitter and the other input terminal of the laser scanner, the output terminal of the ranger controller is connected with the input terminal of the laser ranger, the output terminal of the optical receiver is connected with the input terminals of the signal processing circuit and the computer. As the four wavelength laser units adopted in the invention are all safe minitype low power laser units, instrument cost is greatly lowered, volume and weight of the laser radar system is reduced and feasibility of the system is enhanced, so that the system of the invention can provide beneficial services for promoting the sustainable and sound agricultural development.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping remote sensing, in particular to a multi-spectral earth observation laser radar system. Background technique [0002] Earth observation lidar technology usually only works in a single wavelength mode. Although it has outstanding advantages in obtaining three-dimensional space information, it is not as good as some traditional geodetic means in terms of physical property detection (classification, status, etc.) of ground objects. (such as multi / hyperspectral imaging, etc.). To this end, it is studied how to make up for the shortcomings of single-pulse LiDAR in the detection of physical properties, and combine the advantages of LiDAR's three-dimensional spatial information and multi / hyperspectral sensor's physical property discrimination ability, so that LiDAR can retain the three-dimensional spatial resolution ability while also It is of great value to have the ability to detect phys...

AI Technical Summary

Problems solved by technology

[0002] Earth observation lidar technology usually only works in a single wavelength mode. Although it has outstanding advantages in obtaining three-dimensional space information, it is not as good as some traditional geodetic means in terms of physical property detection (classification, status, etc.) of ground objects. (such as multi / hyperspectral imaging, etc.)

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