天线近场测量系统中位置控制方法的研究  

Study of the position control in the antenna near-field measurement

作　　者：刘少东[1] 刘淑芳[1] 张福顺[1] 焦永昌[1] 

机构地区：[1]西安电子科技大学天线与电磁散射研究所,陕西西安710071

出　　处：《西安电子科技大学学报》2003年第6期798-801,共4页Journal of Xidian University

基　　金：教育部优秀青年教师资助计划项目;天线与微波技术重点实验室基金项目

摘　　要：对近场测量中扫描面位置误差引入的远场误差进行了分析,得到位置误差与测量误差之间的数量关系,说明了近场测量中必须保证探头足够的定位精度.针对近场测量中特定的半闭环控制系统,给出了由计算机编程来进行位置误差补偿的方法,即根据激光测距仪得到的扫描架位置误差数据来校正探头的定位,然后在此基础上采用函数修正的方法进一步提高其定位精度,从而实现了探头的精确定位.测量曲线表明了该方法的可行性.This paper analyzes the farfield error resulting from the position error of the scan surface in the nearfield measurement, and the relation between position error and measurement error is obtained which indicates that the location precision of the probe is necessary. For a specific control system with the half closedloop technique in nearfield measurements, a compensation method of the position error is given by computer programming. The location of the probe is corrected according to the error data of the scan frame gained from the laser range finder, then a function correction method is used to further improve the location precision, and the precision requirement of the probe location is satisfied. Finally the measurement results validate the method mentioned above.

关 键 词：近场测量 位置误差 激光测距仪 位置误差补偿 探头定位 天线 

分 类 号：TN820[电子电信—信息与通信工程]