System for detecting atmospheric temperature by rotational Raman lidar

A technology of laser radar and atmospheric temperature, which is applied in the field of optics to achieve the effect of high precision

Inactive Publication Date: 2010-06-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to propose a system for detecting atmospheric temperature using rotating Raman lidar in order to solve the limitation problem existing in detecting the vertical distribution profile of atmospheric temperature

Method used

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  • System for detecting atmospheric temperature by rotational Raman lidar
  • System for detecting atmospheric temperature by rotational Raman lidar
  • System for detecting atmospheric temperature by rotational Raman lidar

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Embodiment

[0021] Such as figure 1 As shown, a system of the present invention that uses a rotating Raman lidar to detect atmospheric temperature includes a system control mechanism 1, a laser 2, a beam expander 3, a first emitting light guide mirror 4, a second emitting light guide mirror 5, detection laser beam 6, echo light signal 7, large aperture receiving telescope 8, aperture diaphragm 9, signal transmission fiber 10, multi-channel spectrometer mechanism 11, first focal plane 12, first channel lens 13, first Channel diffractive blazed grating 14, second focal plane 15, second channel lens 16, second channel diffractive blazed grating 17, optical axis 18 of first channel lens 13, optical axis 19 of second channel lens 16, echo signal input Light hole 20, λ 1 Band output aperture (λ 1 Indicates 528.8~529.3nm) 21, λ 2 Band output aperture (λ 2 Indicates 530.1~530.7nm) 22, λ 3 Band output aperture (λ 3 Indicates 533.5~534.0nm) 23, λ 4 Band output aperture (λ 4 Indicates 534.9~...

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Abstract

The invention relates to a system for detecting atmospheric temperature by a rotational Raman lidar, belonging to the technical field of optics. The system comprises a system control mechanism, a laser, a laser emitting mechanism, a large-caliber receiving telescope, a multi-channel spectrometer mechanism, a collimating lens high-J signal data acquiring mechanism, a low-J signal data acquiring mechanism and a signal processing mechanism, wherein a laser beam sequentially enters a light beam expander, a first emitting light-guiding lens and a second emitting light-guiding lens and then forms a detecting laser beam, a backward scattering backwave optical signal of the laser beam is received by the large-caliber receiving telescope and collected into a micropore diaphragm, then is sent to the multi-channel spectrometer mechanism, splits and filters an interference signal, and then enters a photoelectric detector, an amplifier, an analog digital converter and the signal processing mechanism; and a photoelectric detection signal is inverted according to an equation of the rotational Raman scattering lidar equation to obtain vertically distributed profile data of the atmospheric temperature. The invention can detect the vertically distributed profile of the atmospheric temperature of atmospheric troposphere and has high precision.

Description

technical field [0001] The invention relates to a system for detecting atmospheric temperature by using a rotating Raman laser radar, which belongs to the field of optical technology. technical background [0002] Obtaining high-precision vertical distribution profile data of atmospheric temperature is of great significance to many industries, and has a direct impact on people's lives, related scientific research, military activities, and economic activities. The main means used by the Meteorological Department to measure the altitude distribution profile of the atmosphere are sonic radars, radiosondes, rocket sondes, and satellite-borne infrared or microwave radiometers. Sodar is mainly used to detect the atmospheric temperature profile in the boundary layer, and its detection range is limited; satellite remote sensing can measure the atmospheric temperature profile on a global scale, but its vertical spatial resolution is low, and its detection accuracy in the troposphere ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95G01S7/481
CPCY02A90/10
Inventor 张寅超苏嘉陈思颖王玉诏邱宗甲孔卫国倪国强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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