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Doppler anemometry laser radar sensitivity calibrating system and method

A technology of Doppler wind measurement and laser radar, which is applied in the direction of radio wave measurement systems and instruments, can solve the problems of difficult calibration and the inability to obtain real-time wind field information synchronized by the laser radar system, and achieve the effect of simple and easy operation of the system

Inactive Publication Date: 2010-09-15
XIAN UNIV OF TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide a Doppler wind measurement laser radar sensitivity calibration system, which solves the problem that the existing wind measurement laser radar system is difficult to calibrate and cannot obtain real-time wind field information synchronized with the laser radar system

Method used

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  • Doppler anemometry laser radar sensitivity calibrating system and method
  • Doppler anemometry laser radar sensitivity calibrating system and method
  • Doppler anemometry laser radar sensitivity calibrating system and method

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] The structure of the Doppler wind laser radar sensitivity calibration system of the present invention, as figure 1As shown, a pulsed laser 1 is included, and a beam splitter a2 is arranged on the outgoing light side of the pulsed laser 1, and a lens a4, an optical fiber 11, a lens b8, a lens c5, and a rotating body 6 are sequentially arranged on one optical path of the beam splitter a2. The body 6 is provided with a speed sensor 7, and the other side of the lens c5 is provided with a reflector b9 and a lens d10 in sequence; the other optical path of the beam splitter a2 is provided with a reflector a3, a reflector b9 and a lens d10 in sequence.

[0038] The method for calibrating using the Doppler wind lidar sensitivity calibration system of the present invention is specifically implemented according to the following steps:

[0039] S...

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Abstract

The invention discloses a Doppler anemometry laser radar sensitivity calibrating system which comprises a pulse laser, wherein the light-emitting side of the pulse laser is provided with a beam splitter a, one light path of the beam splitter a is sequentially provided with a lens a, an optical fiber, a lens b, a lens c and a rotator, the rotator is provided with a speed sensor, the other side of the lens c is sequentially provided with a reflector b and a lens d; and the other light path of the beam splitter a is sequentially provided with a reflector a, a reflector b and a lens d. The invention also discloses a calibrating method of the calibrating system, which is used for simulating to generate an optical signal comprising Doppler frequency shift information and being capable of not only calibrating a coherent Doppler anemometry laser radar calibrating system, but also calibrating an incoherent Doppler anemometry laser radar calibrating system based on an Fabry-Perot standard or atom filter and subjected to light splitting by adopting an edge detection technology. The system is simple and easy and is suitable for the calibration based on a laboratory environment.

Description

technical field [0001] The invention belongs to the technical field of laser radar, and in particular relates to a Doppler wind measuring laser radar sensitivity calibration system, and also relates to a calibration method using the calibration system. Background technique [0002] The measurement of atmospheric wind field is helpful for the study of planetary-scale dynamics, synoptic-scale dynamics, and mesoscale and small-scale synoptic system dynamics. Accurately observing the atmospheric wind field is of great significance for improving the accuracy of weather forecast and storm forecast, and improving the accuracy of climate models. At the same time, accurate observation of atmospheric wind field is also of great significance for military meteorological and environmental forecasting and improving aerospace support. [0003] As an active remote sensing detection tool, lidar has been widely used in research fields such as laser atmospheric transmission, global climate pr...

Claims

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Application Information

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IPC IPC(8): G01S7/497
Inventor 华灯鑫毛建东汪丽王玉峰巩鑫
Owner XIAN UNIV OF TECH
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