High-altitude air Rayleigh scattering wind-warm probe laser radar

The invention discloses a high-altitude air Rayleigh scattering wind-warm syndrome laser radar which is used for high-altitude air sounding. The laser radar comprises a laser emitting unit (1), a receiving telescope (2), an optical fiber (3), a frequency discrimination unit (4) and a data acquiring and processing unit (5), wherein output frequency of emitting laser adopts atomic absorption for frequency stabilization; and the frequency discrimination unit can adopt three channels of the same atom for frequency discrimination, respectively obtains strengths of full spectrum, left edge spectrumand right edge spectrum of an echo spectrum, and can simultaneously obtain air density, temperature and wind field. The invention has the advantages of strong inhibition capacity of background light,high frequency discrimination precision, small detection error and stable and reliable work.