摘要
方位瞄准系统中,通常借助直角棱镜实现对惯性器件方位敏感轴的监测。直角棱镜棱脊不平时将会引起方位瞄准误差,通过建立棱脊不平度对方位瞄准精度影响的数学模型,推导出了精确的矢量表达式,给出了目前常用的棱脊不平度测量原理及其工程实现手段,在此基础上,提出了一种基于斜方棱镜进行棱脊不平度检测、标定的新方法,分析了测量原理及影响测量精度的重要误差源。基于自研"斜方棱镜装置",搭建测试平台,实验结果表明,装置沿棱脊方向的水平状态对测量精度影响较大,经标定后的系统,测量精度可以达到10″以内,具有操作高效、简便等显著优点,对于提高方位瞄准精度,有着非常重要的现实意义。
In the azimuth aiming system, the sensitive-axis direction of inertial unit is monitored usually with the help of right-angled prism. The azimuth aiming error was produced by the right-angled prism tilting, through building the mathematical model of the influence of prism tilting on the aiming accuracy, the accurate vector expression was founded, in addition, the conventional measuring way and technique were introduced, furthermore, a new detecting and calibrating method of prism tilting based on the rhombic prism was studied, and some leading causes that affecting the measuring accuracy of the system were discussed. Then, experiment platform was built based on our own rhombic-equipment. The acquired data proves that the measurement results are direction of prism titling, the calibrated system the same time, this new system has obvious operated very simply and conveniently, it has azimuth aiming precision. greatly influenced by the device level state along the has achieved high measuring accuracy less than 10″. At advantages on high measuring efficiency, and can be a very important practical significance to improve the
出处
《红外与激光工程》
EI
CSCD
北大核心
2013年第1期228-232,共5页
Infrared and Laser Engineering
基金
国防预研项目
关键词
直角棱镜
棱脊不平度
斜方棱镜
误差分析
right-angled prism
prism tilting
rhombic prism
error analysis
