关于卫星对地面目标跟踪识别仿真  

Tracking and Identification Simulation on Satellites to Ground Targets

作　　者：高晓杰[1] 韩潮[1] GAO Xiao - jie HAN Chao(School of Astronautics, Beihang University, Beijing 100191, China)

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《计算机仿真》2017年第6期42-46,120,共6页Computer Simulation

摘　　要：为提高卫星对地面点目标跟踪的可见时间窗口的求解效率,提出了一种基于二次曲线拟合的卫星可见性快速算法。将卫星对地面的可见性求解问题转化为一个非线性方程求根的问题,利用二次曲线插值拟合原可见性函数,进而求解可见窗口。完成了卫星对地面目标可见函数的推导,并计算出一颗近地卫星对地面目标的可见窗口。仿真结果表明,在与传统跟踪传播算法达到相同的可见窗口计算精度时,计算时间缩短了95%以上,大大提高了卫星对地跟踪任务规划的效率。A fast algorithm based on quadratic curve fitting technique is proposed in order to improve the efficiency of satellite - site tracking visibility time windows. The problem of satellite - site visibility is converted into a non-linear equation rooting problem, and a quadratic fitting approach is utilized to reconstruct the original visibility function to get time windows. The visibility function of a satellite to ground target is derived, and the calculation of visible windows of a near earth satellite to ground target is completed. Numerical results show that computation time is shortened by more than 95% compared with the traditional tracking propagation algorithm to achieve the same calculation accuracy, which greatly improves the efficiency of satellite to ground target tracking mission planning.

关 键 词：星地可见性 时间窗口 快速算法 二次插值 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]