摘要
通过合并多输入多输出(MIMO)和无源相干定位(PCL)雷达的两种思想,可以同时获取近期开始研究的这两种雷达的优势。虽然在发射机和接收机中使用多个天线,即采用机会照射可提供目标的空间分集,但最重要的一点是雷达可对截击机进行隐蔽探测。但是,当单频网络(SFN)发射机用作非协作发射机时也会产生一些问题。这种情况下,在接收机中无法辨别出多发射机探测多目标返回的信号。因此,为了获取MIMO雷达的分集增益和定位目标,有必要开发一项技术将接收机中的每个回波分配至发射机和目标。在以前的工作中已经提出这一技术,该文通过智能化算法改进来提升这项技术。
By combining the two ideas of MIMO（Muhiple Input Multiple Output） and PCL（Passive Co- herent Location） in radar, one can achieve the advantages of both recently developed techniques simultane- ously. While using multiple antennas in transmitter and receiver provides a spatial diversity of target, using the illuminators of opportunity, most importantly, makes the radar covert to the interceptors. But the prob- lem arises when the transmitters of a single frequency network（SFN） are used as the noncooperative trans- mitters. In this ease the signals of multiple transmitters from multiple targets cannot be distinguished in the receiver. Therefore, to obtain the diversity gain of the MIMO radar and localize the target, it is necessary to develop a technique to assign each echo in the receiver to a transmitter and a target. In previous works we have proposed such technique. Here, we improve it by a smart modification in the algorithm.
出处
《雷达科学与技术》
2013年第1期1-8,共8页
Radar Science and Technology
