一种单星对星仅测角无源定轨跟踪方法  

Novel Satellite-to-Satellite Passive Orbit Determination and Tracking Method with Bearing-Only Measurements

作　　者：吴顺华[1] 辛勤[1] 万建伟[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,长沙410073

出　　处：《系统仿真学报》2009年第12期3701-3704,3709,共5页Journal of System Simulation

基　　金：武器装备预研基金(9140A20010107KG0163)

摘　　要：在星对星无源定轨跟踪中,由于卫星运动方程的非线性和隐函数性,如何建立适合递推滤波的状态预测方程和状态转移矩阵是个首要的问题。根据卫星运动的动力学和几何学条件,推导准确的状态预测方程及其对应的状态转移矩阵,并给出了相应的计算方法。根据单站无源定位理论,提出了一种新的基于准确状态预测模型的仅测角单星对星无源定轨跟踪方法。仿真实例表明,与已有的采用近似状态预测模型的定轨方法相比,该方法具有更高的估计精度和更快的收敛速度,且两者计算耗时相当。In satellite-to-satellite passive orbit determination and tracking, finding a state prediction formulation, which is adapted to recursive filtering, and deriving the corresponding state-transition matrix, is prime and very important, since the motion equation of satellite is nonlinear and it is an implicit function of system state. Based on the kinetics and geometry of satellite motion, an accurate state prediction formulation and the corresponding state-transition matrix were derived and the computation methods were proposed Then, according to the theory of passive locating with single observer, a novel satellite-to-satellite passive orbit determination and tracking method with bearing-only measurements was proposed Simulations were designed and carried out. The results indicate that, compared with the method using an approximate state prediction formulation, higher accuracy of estimation and faster convergence are obtained using the novel method and the computational complexity of the later is comparable with the former.

关 键 词：卫星定轨 跟踪滤波 无源定位 仅测角 单观测站 

分 类 号：V55[航空宇航科学与技术—人机与环境工程]