摘要
高脉冲重复频率雷达目标距离估计时面临距离模糊问题,因此必须采取一定方法解距离模糊。现有方法大都需要在每个驻留时间内至少两帧(包括两帧)检测到目标来实现目标距离估计,多假设方法虽然不要求在每个驻留时间内都需至少两帧检测到目标,但是当模糊区间发生变化时会出现目标距离估计错误。针对现有多假设方法的不足,提出改进的多假设方法,通过建立相关波门来判断目标所在的模糊区间是否改变并对目标状态作出修正,实现对模糊区间发生变化时目标距离的正确估计。仿真表明,方法可以不受模糊区间变化的影响,以较高精度实现目标距离估计。
High Pulse Repetition frequency（HPRF） radar has range ambiguity problem in target range estimation.Current methods mostly should change HPRF frequently in a dwell time to resolve range ambiguity.Although it is unnecessary to change HPRF frequently for the existing multiple hypothesis track algorithm,it will make a mistake on range estimation when ambiguous interval changes.Therefore,improved multiple hypothesis algorithm is proposed to judge whether the ambiguous interval of the target changes by a threshold and then the target state is modified.Simulation results demonstrate that the proposed method can estimate target range with high accuracy need not considering the changes of the ambiguous interval.
出处
《火力与指挥控制》
CSCD
北大核心
2012年第2期20-24,共5页
Fire Control & Command Control
基金
国家自然科学基金(60972159
61179018
61102165)
"泰山学者"建设工程专项经费基金资助项目
