无源跟踪 meaning in English

passive tracking

This paper studies on algorithms of multiple moving targets passive tracking and data association in the field of passive acoustic detective network forwarning system , the major contributions and innovations are as following : 1
本文针对无源声音探测网络预警系统，研究了多运动目标无源跟踪与数据关联问题中的相关算法，主要贡献与创新在于： 1
These factors make the problem of multiple moving targets passive tracking and data association become especially difficulty , many algorithms become helpless in this problem which are available in active multisensor - multitarget tracking and data association
这些因素导致多运动目标无源跟踪与数据关联问题变得异常复杂困难，许多适用于多运动目标有源跟踪与数据关联的算法在这个问题上变得束手无策。