Autocollimator for Small Angle Measurement over Long Distance

摘要：

　　In order to send the load to the right track, it is necessary to aim the initial emission angle before rocket launching.We designed an autocollimator which can accurately measure small angle over long distance to meet the requirements of rocket launching.By adding a new optical imaging system to the common one, the focal length and resolution both largely increase.Cubic polynomial fitting was used to calculate the deflection angle which reduces the influence of laser beam drifts and other undesirable changes of autocollimator.Experiment results demonstrated that the system has an accuracy of ±2 over a measurement distance of 150 m and remain such precision during an hour.The autocollimator achieves high accuracy, stability and anti-interference of unwanted lights.

关键词： Auto-collimation Small-angle measurement Optical system combination Cubic polynomial fitting

作者: Jun Luo Wei Zhao

作者单位: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science,Changchun 1300 PLA Military Representative Office, No.206 Institute of the 2nd Academy of CASIC,Beijing 100854, Chi

会议类型: 国际会议

会议名称: The 27th Conference of Spacecraft TT&C Technology in China(第27届中国飞行器测控学术会议)

会议地点: 广州

会议语种:英文

页码: 263-271

在线出版日期: 2014-11-09（万方平台首次上网日期，不代表论文的发表时间）