The present invention discloses an inversion method for
laser radar data of atmospheric particulate matter particle size spectrum spatial and temporal distribution. The method comprises: by measuring back scattered
echo signal of atmospheric particulate matters via
laser radar, accurately inverting to obtain
extinction coefficients of atmospheric particulate matters in three wavelengths of
infrared, visible and
ultraviolet bands at different heights from the ground; building lognormal distribution spectral functions of four
aerosol components and parameters thereof, for obtaining refractive indexes at different bands of different aerosols and the
mixing ratio of the four
aerosol components in different
aerosol modes; obtaining the particle size spectrum normalized at 0.55 micron of the
extinction coefficient of each aerosol basic component, and comparing with a standard spectrum for
authentication; and finally performing iterative calculation to the
extinction coefficient spectrums obtained by
laser radar surveying to obtain the aerosol mixed volume ratio of each height, thus obtaining atmospheric particulate matter
particle size distribution of different heights at different times. According to the inversion method of the invention, valid data are provided for analysis and study of
particle properties and variation patterns, especially, an effective means for spatial and
temporal change detection for the particle-size spectrum of the atmospheric particulate matters is provided, and active three-dimensional
telemetry technology suitable for atmospheric particulate matter
particle size distribution is established.