Active and passive laser guide positioning method, system and device

The invention belongs to the technical field of positioning guidance, and relates to an active and passive laser guide positioning method, system and device. According to the method, digital signals of received laser signals are obtained, the received laser signals can be generated by pulse signals emitted actively or pulse signals emitted by other objects, and flexible switching between an active mode and a passive mode can be achieved; generating at least one convolution kernel through preset random coding; the convolution kernels and the digital signals are subjected to convolution operation, convolution results corresponding to the number of the convolution kernels are generated, and when the confidence coefficient of at least one set of convolution results is larger than a set threshold value, the laser signals corresponding to the convolution results are laser echoes reflected by the target object; a target position is obtained according to laser echoes reflected by a target object, and a target ranging