Calibrating apparatus for Rayleight windfinding laser radar and calibrating method thereof
A wind-measuring laser radar and calibration device technology, which is applied in the testing/calibration of measuring devices, velocity/acceleration/shock measuring equipment, and the use of re-radiation, can solve the problems of undiscovered Rayleigh wind-measuring lidar calibration methods, etc. Achieve rapid calibration, improve accuracy, and high calibration accuracy
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[0036] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.
[0037] see first figure 1 , as can be seen from the figure, the Rayleigh wind lidar calibration device of the present invention includes a laser 1, along the laser output optical path of the laser 1, the first reflector 2, the attenuator 3, the second reflector 4, the first acoustic The optical frequency shifter 5, the second acousto-optic frequency shifter 6 and the Doppler stretcher 7 are composed, and the output end of the Doppler stretcher 7 passes through the signal collecting optical fiber 8 and the receiving part of the Rayleigh wind laser radar 9 connected.
[0038] The laser 1 is a laser with a laser wavelength of 355nm.
[0039] The center frequency of the first acousto-optic frequency shifter 5 is 400MHz, the frequency adjustable range is 400±30MHz, and its Br...
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