基于光电延时模拟法的激光测距仪校准系统设计  

Design of Calibration System of Laser Rangefinder Based on Photoelectric Delay Simulation Method

作　　者：邓雪峰 付永杰 DENG Xue-feng;FU Yong-jie(Institute of metrology and testing,Unit 92493 of PLA,Huludao 125000,China)

机构地区：[1]92493部队计量测试研究所,辽宁葫芦岛125000

出　　处：《光学与光电技术》2024年第3期43-49,共7页Optics & Optoelectronic Technology

基　　金：激光测距仪校准装置建立(某部计量技术基础项目)。

摘　　要：为了校准激光测距仪的测距精度,设计了一套激光测距仪校准系统,该系统主要由衰减组件、测距精度模拟器组成。设计了基于光电延时模拟法的测距精度模拟器,该模拟器通过分光棱镜对激光二极管输出激光进行分光,并通过时间测量精度为皮秒级的TDC模块对输出激光信号进行测量,降低了时钟引起的不确定性误差,并且使光路和电路上产生的延迟相互抵消,提高了模拟距离的精度。该测距精度模拟器经国家法定计量技术机构检测,满足设计要求。利用设计的激光测距仪校准系统对某型激光测距仪测距精度进行了校准验证,结果显示,该装置可以实现对激光测距仪测距精度的校准,测量重复性在1.0 m以内,可以作为计量标准设备使用。In order to calibrate the range accuracy of the laser rangefinder,a calibration system of the laser rangefinder is designed.The system is mainly composed of attenuation components and ranging precision simulator.A ranging precision simulator based on photoelectric delay simulation method is designed.The output laser of the laser diode is divided by the beam spliting prism,and the output laser signal is measured by the TDC module with picosecond time measuring accuracy.The uncertainty error caused by the clock is reduced,and the delay generated by the optical path and the circuit cancles each other,which improves the simulation distance accuracy.The ranging precision simulator has been tested by the national legal metrology technical institution and meets the design requirements.The measuring accuracy of a laser rangefinder is calibrated and verified by the designed calibration system.The results show that the device can calibrate the measuring accuracy of the laser rangefinder,and the measuring repeatability is less than 1.0 m.The ranging precision simulator can be used as standard measuring equipment.

关 键 词：长度计量 激光测距仪 测距精度 校准 光电延时 

分 类 号：TN249[电子电信—物理电子学]