Underwater vertical suspended matter concentration detection method and system based on laser radar

The invention relates to the technical field of water body environment monitoring, in particular to an underwater vertical suspended matter concentration detection method and system based on a laser radar, and can solve the problem that three-dimensional distribution information of suspended matter concentration in a water body is difficult to accurately detect and master. The detection system comprises an emitter used for emitting laser pulses to a to-be-detected water body, the laser pulses are spread in the to-be-detected water body after entering the to-be-detected water body, when the laser pulses are spread in the to-be-detected water body, scattering occurs, and scattering comprises forward scattering and backward scattering; the receiver is used for receiving a backscattering signal generated by the laser pulse in the water body to be detected, the backscattering signal is backscattering generated by the laser pulse in the water body to be detected after the laser pulse is scattered by the water body