光电跟踪仪视频处理系统频域特性获取方法研究  

Testing method for frequency-domain characteristics of video processing system of EO tracker

作　　者：陆培国[1] 刘小强[1] 杨修林 寿少峻[1] 王虎[1] 梁晓东[1] 

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2014年第5期739-743,共5页Journal of Applied Optics

基　　金：国防支撑项目

摘　　要：针对光电跟踪仪伺服系统设计所关心的视频处理系统的频域特性参数,在频域内分析了视频处理系统的理论模型,并设计了一种频域测试方法,借助于光电跟踪仪伺服系统速度环路,通过在频域扫频的方式,利用信号之间相位、幅值对比间接测量了视频处理系统的时间滞后和带宽,以50Hz视频处理系统为例,所测带宽为19.452Hz,时间滞后为40.57ms。The EO tracker servo system design focuses on the frequency-domain characteristic parameters of the video processing system.We analyzed the theoretical model of the video processing system in the frequency domain,and designed a novel testing method.By using the velocity loop of the optical tracker servo system,through the frequency sweep in frequency domain and the contrast of the signal phases as well as the amplitudes,we indirectly measured the time lag and bandwidth of the video processing system.Taking a 50 Hz video processing system for instance,the tested bandwidth is 19.452 Hz,the time lag is 40.57 ms.

关 键 词：光电跟踪仪 视频处理系统 频域 延迟时间 滞后 带宽 

分 类 号：TN202[电子电信—物理电子学]