Laser interferometric Doppler radar laser radar and wind measuring method

摘要

Light source firing unit receive unitDetection unitComprising a signal processing unitThe light source firing unit and the receiving unit are connected to a sensing unitThe sensing unit is further connected to the signal processing unitAmong themAt least one type of noise filter device is provided in the receiver unit and / or the sensing unitThe light source firing unit is arranged to fire laser pulses to the measured airspace.Further, it is arranged to transmit the self sending light signal to the sensing unit.Receive unitA laser pulse is arranged to receive an atmospheric scattered light signal scattered by an atmospheric particle in the measured airspace.Further, an atmospheric scattering optical signal is arranged to transmit to the sensing unit;The detection unit performs beat balance detection based on the self emitted light signal and the atmospheric scattered light signalIt is arranged to obtain the detection result.The signal processing unit is arranged to calculate wind speed based on the sensed result and Doppler effect relation.A pulse interference Doppler wind measuring laser radar and a wind measuring method are provided.According to the present application, noise can be suitably filtered to contribute to the signal-to-noise ratio of the radar and the accuracy of the wind measurement accuracy.Diagram