无合作目标测距的回波接收系统设计与分析

发布时间：2018-03-23 14:47

本文选题：无合作目标测距　切入点：卡塞格林望远镜　出处：《仪器仪表学报》2017年01期

【摘要】：对于调频连续波无合作目标测距来说,回波接收系统是其光学系统中重要的组成部分,其接收特性也影响着系统的测距精度。为对其进行设计与分析,利用光学设计软件对以卡塞格林望远镜与多模光纤为主体的接收系统进行了建模,通过像差与光接收效率的分析与优化确定系统选用的卡塞格林望远镜的参数。建立待测物后向散射的高斯散射模型,并搭建完整的接收光路进行实验,定量分析了不同情况下系统的接收功率,并研究了接收效率、聚焦位置等与待测物的距离和表面散射之间的规律。研究结果表明,对于相同的加工方式的样块,系统接收功率与粗糙度、待测物距离成负相关规律,系统聚焦距离与粗糙度、待测物距离呈正相关规律。
[Abstract]:The echo receiving system is an important part of the optical system for frequency-modulated continuous wave non-cooperative target ranging, and its receiving characteristics also affect the ranging accuracy of the system. The optical design software is used to model the receiving system with the Cassegrain telescope and multimode optical fiber as the main body. Based on the analysis and optimization of aberration and optical receiving efficiency, the parameters of the Cassegrain telescope selected by the system are determined. The Gao Si scattering model of the backscattering of the object to be tested is established, and the complete receiving light path is set up for experiments. The receiving power of the system under different conditions is quantitatively analyzed, and the law between the receiving efficiency, the focusing position, and the distance and surface scattering of the object to be measured is studied. The received power of the system is negatively correlated with the roughness and the distance of the object to be measured, and the focusing distance of the system is positively correlated with the roughness and the distance of the object to be measured.
【作者单位】：天津大学精密测试技术及仪器国家重点实验室;国网河北省电力公司;
【基金】：国家自然科学基金(51327006,51675380)项目资助
【分类号】：O439

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