All-fiber non-blind area polarization laser radar system and atmospheric parameter detection method

Abstract

The invention relates to the field of atmospheric parameter detection, in particular to an all-fiber non-blind area polarization laser radar system and an atmospheric parameter detection method. The system comprises: a laser, wherein the laser is used for emitting a laser beam, and the laser beam is returned by the atmosphere to form an echo signal; a telescope which is used for collecting the echo signal; a first optical device which is used for receiving the echo signal acquired by the telescope and dividing the echo signal into a first polarization component and a second polarization component; a first photoelectric detector which is used for receiving the first polarization component and converting the first polarization component into a first electric detection signal; and a second photoelectric detector which is used for receiving the second polarization component and converting the second polarization component into a second electric detection signal.

Description

technical field [0001] The invention relates to the field of atmospheric parameter detection, in particular to an all-fiber non-blind zone polarization laser radar system and an atmospheric parameter detection method. Background technique [0002] Lidar technology is an effective means to detect the spatial distribution of aerosols. The development of laser technology and electronics technology makes Lidar have unique advantages in the detection height, vertical span, spatial resolution and continuous detection of tropospheric aerosols. , which is difficult to compare with other detection methods. However, due to the influence of the optical path of the optical transceiver system, the lidar has detection blind spots and cannot obtain near-field data, and the estimation and revision of the geometric overlap factor will also bring large errors, resulting in no accurate measurement results in the near-ground or key areas of the radar near-field field. . Polarization lidar det...

AI Technical Summary

Problems solved by technology

[0003] In recent years, a lot of research has been done on reducing lidar blind spots and polarization reception at home and abroad, such as using CCD detection methods to obtain near-surface atmospheric aerosol distribution, but it cannot obtain far-field high-resolution signals

Some researchers use multiple telescopes to receive near-field and far-field signals separately, and then perform data splicing. However, the increase in devices leads to an increase in the size of the system, and new errors are introduced in the data splicing process.

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