The present invention relates to a
laser ranging technology and provides a
laser phase
ranging module. The
laser phase
ranging module includes a laser emitting
assembly, an echo receiving and pre-
processing assembly, a local receiving and pre-
processing assembly and an FPGA processor; the FPGA processor generates two
clock frequencies f1 and f2 by using a phase-locked loop, and a
square wave signal with a measurement ruler frequency fs is generated through frequency division based on the
clock frequency f1, and the
square wave signal is transmitted to the laser emitting assembly; the laser emitting assembly emits laser to a target; echoes reflected by the target are processed by the echo receiving and pre-
processing assembly, and then, square
waves A of which the frequency is fs can be outputted; the local receiving and pre-processing assembly partially leads in the emitted laser and performs the same pre-processing as the echo receiving and pre-processing assembly on the led-in laser, and then outputs square
waves B; and the FPGA processor synchronously reads the square
waves A and the square waves B through using the
clock frequency f2 and calculates out the distance of the target through
data processing. According to the laser phase ranging module,
frequency mixing processing is not required, and one measurement ruler can be adopted to realize remote precise ranging. The laser phase ranging module is suitable for single-point ranging and multi-path simultaneous ranging equipment.