摘要
在先进的火炮动态性能测试系统中,光学系统固有的畸变使得不同视场下的实际焦距不同,间接地影响系统的测角精度。使用一种基于最小二乘法的焦距标定公式,标定不同视场下统一的焦距量,能够有效地降低畸变的影响。利用该方法测得某型火炮动态性能测试系统的测角精度为2.34″,将该系统的测角精度从20″提高到5″以内。证明改进的标定公式有助于提高系统的性能指标。
Distortion of optical system makes focal length of advanced fire control dynamic performance test system different at different FOVs, and influences angle-measuring precision. A focal length calibration formula based on least-square method was used to obtain a unified focal length for all the FOVs and the influence of the distortion was reduced. For a specific fire control dynamic performance test system, its measurement result was 2. 34″ by using the method, which improved angle precision from 20 to 5 arc-second. It is proved that the modified calibration formula can improve the performance specification of fire control dynamic performance test systems.
出处
《应用光学》
CAS
CSCD
北大核心
2009年第1期73-75,共3页
Journal of Applied Optics
关键词
测角精度
畸变
焦距
火炮动态测试系统
angle-measurement precision
distortion
focal length
fire control dynamicperformance Test system
