Novel laser radar based on coaxial optics and single photon detection technology, and detection method

Abstract

The invention provides a novel laser radar system based on the coaxial optics and single photon detection technology, and a detection method. By transmitting pulse laser of certain frequency into theatmosphere through a coaxial laser device, the atmosphere generates a scattering effect on the laser, after the backward scattered laser is received by a coaxial receiving mirror, the light is focusedand then is projected onto a detector; the detector can realize automatic gain adjustment, and once an optical signal is input, a pulse signal is output; the pulse signal enters a TCSPC data collection device through a radio frequency cable, the device can achieve a resolution of 32ps, so the input time of the signal can be accurately distinguished; and after the signal is collected, a latter algorithm processes the data in real time, analyzes the current atmospheric state, the distance of pollutants and the forms of the pollutants or the like. The radar is suitable for cloud height testing,fog monitoring, pollutant emission monitoring, laser ranging, atmospheric aerosol monitoring, ozone layer testing, temperature and humidity monitoring, and the like.

Description

technical field [0001] The invention belongs to the technical field of optical detection, in particular to a novel lidar and detection method based on coaxial optics and single-photon detection technology Background technique [0002] With the development of industry, air pollution has been paid more and more attention by the country. Therefore, scientific research institutes and companies have developed some equipment that can monitor the state of the atmosphere. One type of equipment is atmospheric remote sensing equipment, which can measure and monitor long-distance atmospheric parameters. However, such devices on the market have large measurement blind spots, poor stability, and insufficient measurement accuracy. Contents of the invention [0003] Based on the above problems, the present invention provides a new type of laser radar based on coaxial optics and single-photon detection technology. The radar can operate autonomously, and has the advantages of stability, re...

AI Technical Summary

Problems solved by technology

[0002] With the development of industry, air pollution has been paid more and more attention by the country. Therefore, scientific research institutes and companies have developed some equipment that can monitor the state of the atmosphere. One type of equipment is atmospheric remote sensing equipment, which can measure and monitor long-distance atmospheric parameters. status, but such devices on the market have large measurement blind spots, poor stability, and insufficient measurement accuracy.

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