论文部分内容阅读
针对运动扫描辐射源的扫描速率未知的情况,提出一种最大似然定位算法.该算法将各个时差量测分别投影到目标状态空间,通过对目标状态进行修正、迭代和融合实现对扫描速率和目标状态的最大似然估计,同时避免联合估计方法对运动目标的定位精度不足的问题.此外,针对扫描辐射源定位的特点,重新推导分析误差项,从而改进瞬时定位算法.仿真结果表明,所提出的最大似然定位算法及其改进方法是有效的,后者的定位精度接近CRLB.
Aiming at the condition that the scanning rate of the motion scanning radiation source is unknown, a maximum likelihood algorithm is proposed, which can project each time difference measurement into the target state space separately. By correcting, iterating and combining the target states, The maximum likelihood estimation of the target state and avoid the problem that the joint estimation method has insufficient positioning accuracy for the moving target.According to the characteristics of scanning radiation source localization, the analytical error term is deduced again to improve the instantaneous localization algorithm.The simulation results show that The proposed maximum likelihood location algorithm and its improved method are effective, and the latter location accuracy is close to CRLB.