摘要
针对位置探测器在测量时,容易出现所得跟踪目标精度较低、很难实时反馈出被测对象的空间坐标信息等问题,提出基于位置探测器的激光跟踪系统设计方案。首先对四象限探测器角位置测量精度实施分析,根据探测器的光斑位置实际偏差获取主要噪声源,然后设计激光跟踪系统检测光斑位置,并通过低通滤波对信号放大处理,能够大幅降低噪声,提高信号的信噪比,最后运用补偿控制函数优化跟踪处理单元,根据四象限探测器检测目标位置,充分结合角速率和角位置信息,利用PID控制算法实现视轴稳定与目标跟踪。实验结果表明:本文跟踪系统能够减少运算复杂度、跟踪目标精度较高、跟踪误差较小,具有较高实用性和显著优越性。
In view of the fact that the tracking accuracy of the position detector is low,and it is difficult to feedback the spatial coordinate information of the measured object in real time,a design scheme of laser tracking system based on the position detector is proposed.Firstly,the measurement accuracy of four quadrant detector is analyzed,and the main noise source is obtained according to the actual deviation of the detector spot position.Then the laser tracking system is designed to detect the spot position,and the signal is amplified by low-pass filter,which can greatly reduce the noise and improve the signal-to-noise ratio.Then,the compensation control function is used to optimize the tracking processing unit.Secondly,according to the four quadrant detector to detect the target position,combined with the angular rate and position information,the PID control algorithm is used to achieve the LOS stability and target tracking.The experimental results show that the tracking system designed in this paper can reduce the computational complexity,track the target in high accuracy and small tracking error,and has high practicability and significant advantages.
作者
李颖
郑明杰
LI Ying;ZHENG Mingjie(School of Humanities&Information,Changchun University of Technology,Changchun 130122,China)
出处
《激光杂志》
北大核心
2020年第12期126-130,共5页
Laser Journal
基金
吉林省教育厅科技项目(No.JLJ171367)
吉林省高教科研课题(No.JL323720180623193932)。
关键词
位置探测器
视轴稳定
目标跟踪
角位置信息
position detector
LOS stabilization
target tracking
angular position information
