Laser ranging system by time domain waveform matching and method thereof

摘要

A laser ranging system and method using time domain waveform matching. A system includes a software unit and a hardware unit, and the hardware unit includes a collimating optical system, an FPGA, an optical filter, a photoelectric conversion system, an analog amplification circuit, a laser irradiator, a signal multiplexing system, an ADC sampling system, And a narrow pulse laser irradiation circuit, and when the FPGA transmits a control signal to control the laser irradiation, at the same time, the FPGA transmits a reference time pulse to the signal multiplexing system, and the signal multiplexing system is fixed to the reference time pulse and fixed The amplitude analog echo signals are collectively synthesized into an echo signal with a reference time, the echo signal with a reference time is digitized into a digital detection signal in the ADC sampling system, and the digital detection signal is transmitted to the FPGA for data analysis. After the analysis of the time domain waveform matching by the software part, the ranging result is obtained and the FPGA outputs the ranging result. To. [Selected figure] Figure 1