高精度多脉冲激光测距回波检测技术

针对远距离激光测距机回波信号脉宽强度特征和噪声的统计特性，提出了一种高精度多脉冲激光测距机的回波信号检测技术。采用时钟移相分配方式实现了400 MHz高速信号采集及数字化处理，提高了回波脉冲的检测精度。采用ARM嵌入式高速核处理器进行数据算法处理，完成了滤波降噪、自适应门限检测和多帧相关检测等功能，使回波信噪比提高了7.6 dB，达到远距离精确获取目标距离信息的目的。

High precision multi-pulse laser ranging echo detection technology

Aiming at the pulse width intensity features of echo signal of long-distance laser range finder and the statistical characteristics of noise, a echo signal detection technology of high-precision multi-pulse laser range finder was proposed.The 400 MHz high-speed signal acquisition and digital processing was achieved by using the clock phase shift distribution way, so as to improve the echo pulse detection accuracy.An ARM embedded high-speed core processor was used for data processing, the functions of filtering noise reduction, adaptive threshold detection, multi-frame correlation detection and others were completed, which can make the signal-to-noise ration (SNR) increased by 7.6 dB and make the goal for acquiring long-distance target information accurately achieved.