Hyperspectral continuous-light laser radar system for detection of tiny underwater particles

Abstract

The invention discloses a hyperspectral continuous-light laser radar system for detection of tiny underwater particles. The hyperspectral continuous-light laser radar system comprises a laser transmitting unit, a laser receiving unit, a light splitting unit, a light path compensation unit, a photoelectric detection unit and a data acquisition and analysis unit, wherein a light source of the laser transmitting unit is a continuous laser source and transmits continuous laser to a to-be-detected object, and backscattered light of the to-be-detected object is reflected to the light path compensation unit and the light splitting unit and is converged on the photoelectric detection unit finally; the photoelectric detection unit is connected with the data acquisition and analysis unit and signals are analyzed through the data acquisition and analysis unit; the laser transmitting unit is connected with the photoelectric detection unit, and the photoelectric detection unit transmits a synchronizing pulse signal and synchronously modulates light emitting frequency of the laser transmitting unit. According to the hyperspectral continuous-light laser radar system, continuous-light laser is taken as the light source, spatial distribution detection is realized with an imaging method, optical elements are adopted for adjustment, higher resolution is realized, and synchronizing detection for spectrum and space information of the tiny underwater particles is realized.

Description

technical field [0001] The invention belongs to the field of laser hyperspectral remote sensing, and in particular relates to a hyperspectral continuous light laser radar system for detecting underwater tiny particles. Background technique [0002] In order to realize the high-precision and multi-level space monitoring of the complete underwater ecosystem, the combination of multiple technologies is the development trend of remote sensing technology. Remote sensing technology has been widely used in the field of ecological environment detection. Among them, hyperspectral technology is the frontier of remote sensing technology. The current hyperspectral imaging technology has the advantages of high spectral resolution and wide detection range, and can provide spectral image information of the measured target. However, it does not have the function of precise distance measurement and positioning. LiDAR technology has the advantages of good monochromaticity and high emission ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the difficulty of underwater detection of traditional equipment, the invention will cause the detection signal to attenuate by the square with the distance, and cannot realize accurate ranging and positioning at the same time.

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