基于测向角的飞行器无源定位模型及模拟计算

The Passive Location Model and Its Simulation Calculation of Aircraft on Basis of Direction Angle

飞行器无源定位技术的关键是建立定位模型及其快速优化算法。研究了基于地球同步卫星与飞行器测向阵列之间方向角的无源定位技术。利用空间向量分析方法和最小二乘法,在多颗观测卫星的情况下提出了飞行器的静态定位数学模型;在观测卫星较少,且飞行器处于运动状态的情况下,提出了飞行器的动态定位数学模型。借助对相关参数的假设和搜索算法,分别对2个模型进行了模拟计算,较好地实现了2种情况下飞行器的无源定位。

The key of the passive location technology for aircraft is to establish location model and its fast optimization algorithm.A passive location technique based on the direction angle between the earth synchronous satellite and the direction array was studied.Using space vector analysis method and least square method,a mathematical model for the static positioning of aircraft was presented in the case of multiple observation satellites.Under the condition that the observation satellites were few and the aircraft was in motion,dynamic positioning mathematical model was constructed.With the help of the assumptions of the relevant parameters and the search algorithm,the two models were simulated.Thus the passive location of aircraft was better complished.