自触发式脉冲激光雷达响应延迟对测量结果的影响

Influence of Response Delay on the Measurement Results of Self-triggering Pulsed Laser Rangefinder System

分析了自触发式脉冲激光测距系统的结构,确定了信号响应延迟的来源。在常温常压环境下使用该激光测距系统对于标定距离进行测量,得到实验结果并与理论计算的正确结果进行对比,得到了它们两者之间的关系。根据这一关系推导出修正补偿关系式。最后再次用该系统进行测量,依据修正补偿关系式修改程序算法给出修正结果,修正后测量距离结果的误差可以缩小到毫米级,验证了修正措施的有效性,实验结果稳定。

The structure of the self-triggering based laser rangefinder was analyzed to confirm the sources of the signal response delay. Under the condition of the normal pressure and temperature the standardized distances were measured with the laser rangefinder to get the results, which were later compared with the correct results got from the theoretical calculation, and the relation between the two was obtained, according to which the relational formula of the correction and compensation were deduced. Finally, with this system, some other measurements were proceeded. The results were corrected after modifying the programmed algorithm adopting the correction, which indicate that the corrected results error could be shrunk to millimeter level, which proved the validity of the correction. And the experiment results were stable.