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Distance resolution implementation method for continuous wave sodium temperature and wind measurement laser radars

A wind-measuring lidar and distance-resolving technology, applied in radio wave measurement systems, measurement devices, climate sustainability, etc., can solve the problems of numerous components, high system power consumption, complex optical path systems, etc., and achieve a stable and simple structure Effect

Active Publication Date: 2019-01-04
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, due to the complexity of the pulsed radar optical system and various components, on the one hand, the power consumption of the system is relatively high, and it is difficult to achieve miniaturization; Highly experienced researchers
The construction and data collection of a pulsed laser radar is accompanied by a lot of manpower, material and financial resources, which makes it difficult to build the system on a large scale on land, form a dense collection network, and conduct deeper research on climate change at the top of the middle layer ; In addition, how to realize the distance resolution function of continuous wave sodium temperature measurement and wind measurement lidar is a difficult problem

Method used

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  • Distance resolution implementation method for continuous wave sodium temperature and wind measurement laser radars
  • Distance resolution implementation method for continuous wave sodium temperature and wind measurement laser radars
  • Distance resolution implementation method for continuous wave sodium temperature and wind measurement laser radars

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] The embodiment of the present invention provides a method for realizing distance resolution of continuous wave sodium temperature measurement and wind measurement lidar, such as figure 1 As shown, it mainly includes:

[0019] 1. Use the electro-optic modulator to change the continuous laser light intensity, and realize the continuous laser pseudo-random M-sequence coding emitted by the continuous laser light source.

[0020] 2. By collectin...

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Abstract

The invention discloses a distance resolution implementation method for continuous wave sodium temperature and wind measurement laser radars. Laser intensity coding meeting a pseudorandom M sequence is performed on high power continuous laser; and detection height resolution of continuous sodium temperature and wind measurement laser radars can be realized by utilizing a synchronous acquisition device and inversion method, and therefore, key technical problems of the improvement of complex impulse type sodium temperature and wind measurement radars into the continuous wave sodium temperature and wind measurement laser radars with stable and concise structures can be solved.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a distance resolution realization method of continuous wave sodium temperature measurement and wind measurement laser radar. Background technique [0002] From the altitude of 80km in the atmosphere, the Rayleigh molecular scattering signal is extremely weak, and it is difficult for Rayleigh lidar to obtain information such as atmospheric temperature and wind field at higher altitudes. Atmospheric temperature in this altitude region can be detected by using the resonant fluorescence scattering echo signal of the metal atomic layer at an altitude of 80-105km. This type of lidar is called resonance fluorescence lidar, mainly including Fe, Na and K fluorescence lidar. Its principle is mainly to invert the atmospheric temperature by emitting laser light with a narrow line width, using the fluorescence spectral lines of metal atoms, and detecting the fluorescent signals at differ...

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Application Information

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IPC IPC(8): G01S17/95
CPCG01S17/95Y02A90/10
Inventor 李丰方欣李陶
Owner UNIV OF SCI & TECH OF CHINA
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