Structure of Doppler wind lidar based on F-P standard utensil and detection method thereof

Abstract

The invention discloses a Doppler anemometer laser radar structure and detecting method based on F-P etalon, which is characterized by the following: the optical path contains Nd: YAG laser to output two beams of laser, wherein one beam is launched towards sky through two-dimensional scanning unit of plane reflector; the other beam laser intersects the input end of two-in-one optical fiber coupler through optical fiber; the optical fiber receiving port is loaded at the focus point of telescope cylinder with the optical fiber intersecting the input end of two-in-one optical fiber coupler; the output end of two-in-one optical fiber coupler connects collimating mirror through optical fiber, whose optical path loads color filter, beam splitting piece at 4:1 transparent-reflect rate, F-P etalon; one rectangle reflecting lens is set in the reflecting optical path of transparent optical path and beam splitting piece of etalon separately with one photon count detector setting on two sides of reflecting surface of each rectangle reflecting lens; the output end of photon count detector intersects data gathering and disposing equipment; the invention adopts double-brink technology to detect the layout of tropospheric atmospheric wind field directly.

Description

technical field [0001] The invention belongs to a laser radar detection method, in particular to a Doppler wind measurement laser radar based on an F-P etalon and a detection method thereof. Background technique [0002] Wind is an important parameter in the study of atmospheric dynamics and climate change. Using wind data, changes in the atmosphere can be obtained and predicted, which will promote human understanding of energy, water, aerosols, chemistry and other air material circles, and improve Capabilities in meteorological analysis and global climate change. The current wind field data mainly come from radiosonde anemometers, ground stations, ocean buoys, observation ships, aircraft, and satellites, which have great limitations in coverage and observation frequency. Direct three-dimensional wind field measurement around the world has been put on the agenda. The World Meteorological Organization has proposed an urgent need for global high-resolution atmospheric wind fi...

AI Technical Summary

Problems solved by technology

At present, domestic wind measurement using edge technology uses iodine absorption technology to detect Doppler frequency shift, but frequency detection is very strict on temperature control, and can only use 532nm band, the application range is limited, and it is in the most sensitive band of human eyes , not suitable as the payload of the spaceborne platform

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