机动目标状态估计器算法研究

基于战斗机航迹准稳态运动状态假设,研究了机动目标状态估计器算法.该算法通过选取虚拟测量变量和状态变量,以及假设目标处于航迹准稳态运动状态,把含有9个变量的非线性滤波和预测问题转化为1个三阶和3个二阶的线性滤波和预测问题.在综合控制系统中的仿真结果表明,该算法计算量小,滤波精度好,能够满足综合控制需求.

Study of algorithm for maneuvering target state estimator

The algorithm of state estimator for maneuvering target is studied based on the assumption of quasi-steady state of flight path of the fighter. By selecting virtual measure variable and state variable, and by supposing the flight path of target is in quasi-steady state, this algorithm converts the problem of nonlinear filtering and estimation with nine variables into one three-ordered and three two-ordered linear filtering and estimation problems. It is showed that the algorithm has light computing load and good filter precision, and is capacity to meet the requirements of integrated control in the simulation result of integrated control system.