摄影经纬仪焦距偏差对测角精度的影响  

Effects of angle finding accuracy for photographic theodolite focusing error

作　　者：曾科军[1] 叶剑锋[1] 

机构地区：[1]中国人民解放军91550部队

出　　处：《光学仪器》2011年第5期1-4,共4页Optical Instruments

摘　　要：文中针对摄影经纬仪光学镜头调焦系统的设计原理,通过统计工程应用上的焦距偏差范围,定量分析了其中的各个影响因素,并给出了焦距偏差对摄影经纬仪测角精度的影响大小及规律。结果表明:调焦带来的焦距偏差会对测量精度造成一定影响,镜头焦距越小,焦距偏差越大,对测角精度的影响就越大。这是经纬仪研制时所必须考虑的一个因素。According to the principle of theodolite focusing system, and making statistical about the focusing error range in the application, the effects of angle finding accuracy for photographic theodolite focusing error have been analyzed quantitatively. And then give the influence and regularity. The results showed that the focusing error influences the angle finding accuracy. If the focal length became smaller and the focal length became greater, then the accuracy of the measured angle is greater. It must be considered in the preparation of theodolite.

关 键 词：经纬仪 测角精度 焦距 调焦系统 

分 类 号：V556.5[航空宇航科学与技术—人机与环境工程] V557.4