Self-correcting rotating Raman laser radar temperature measuring system and inversion method thereof

Abstract

The invention discloses a self-correcting rotating Raman laser radar temperature measuring system and an inversion method thereof. The system comprises a pulse laser device and a collimating beam expander that connected in sequence; a spectroscope and a reflection mirror are sequentially arranged along an outgoing direction of a light path of the collimating beam expander. A photoelectric detectoris arranged in a reflected light path of the spectroscope; the system and also includes a telescope, an optical fiber coupler is fixed on an output light port of the telescope, and the reflection mirror is located at a mouth of the telescope; the optical fiber coupler is sequentially connected with a first-order spectrum beam splitting system, a relative detection system for second-order spectrumbeam splitting and a system control processing platform; an absolute detection system for the second-order spectrum beam splitting is connected between the first-order spectrum beam splitting systemand the system control processing platform, and the system control processing platform is connected with a pulse laser device and the photoelectric detector. The system is advantageous in that relative detection distance is long and correction is not needed for absolute detection. The system can be used for daytime detection and is capable of realizing self-correcting all-time atmospheric temperature remote sensing.

Description

technical field [0001] The invention belongs to the technical field of remote sensing temperature measurement systems, and relates to a self-correcting rotating Raman laser radar temperature measuring system, and also relates to an inversion method of the self-correcting rotating Raman laser radar temperature measuring system. Background technique [0002] Atmospheric temperature is one of the important atmospheric state parameters. At present, since the rotating Raman lidar uses the Raman scattering signal of the atmosphere to invert the atmospheric temperature, it can eliminate the influence of aerosol extinction at the bottom of the atmosphere, so it is especially suitable for detecting the tropospheric atmospheric temperature profile . However, the existing rotating Raman lidar system needs the experimental data of parallel equipment such as radiosondes for data correction, which is not conducive to the atmospheric temperature detection of rotating Raman lidar as an inde...

AI Technical Summary

Problems solved by technology

Although it solves the problem that rotating Raman lidar requires parallel instrument calibration, it is difficult to extend the detection distance to the tropopause because the system uses single-mode fiber fiber grating technology

In addition, since the system does not efficiently filter out solar background noise, remote sensing of daytime temperature profiles cannot be carried out

Images