Non-linear Compensation Algorithm of LOS Locating in Aerial Remote Sensor
A non-linear light-of-sight(LOS) locating compensation algorithm for certain aerial remote sensor is presented in this paper. The LOS locating system is composed of two main components, which are an inertial reference frame to provide coarse LOS locating and a 2-axis Fast Steering Mirror to remove the frames residual error. The azimuth and elevation of LOS are both affected by the FSM two-degree-offreedom rotation, which should be dealt with to raise the accuracy of LOS location. This paper extrapolates LOS locating algorithm of FSM by coordinate transformation, and gives corresponding deviation analysis for different LOS poiting angles. It is found that the angle deviation grows rapidly with range of FSMs travel enlarging, so the deviation must be eliminated. Through the data analysis for deviation, a non-linear compensation algorithm is proved effective to reduce the error of LOS significantly. Taking LOS changing in (-3 deg, 3 degl as an example, two analytic expressions are given, and the LOS locating accuracy rises by 34 times compared with non-linear compensation unused, and the cross coupling of LOS loafing is 0.08％.
aerial remote sensor FSM non-linear compensation ltght-of-sight coordinate transformation
Jun Li Jihong Xiu Pu Huang Youyi Li Li Chen
Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences Changchun, Chi Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Ch
国际会议
哈尔滨
英文
2454-2457
2011-08-12（万方平台首次上网日期，不代表论文的发表时间）