摘要
针对在同一时段、同一频带上多目标发射信号的情况下常用的测定信号到达时差的时域测定方法和频域测定方法性能恶化甚至失效的问题,提出了一种测定多个时频混叠信号到达时差的方法;利用3个或3个以上的无线电接收机接收信号、测定时频混叠的多个信号到达各接收机之间的时差,可在一定程度上满足抗干扰、多目标同时无线电定位的应用需求。仿真实验结果表明,提出的子空间时差估计方法可较准确的估计多信号时差。
Considering on the performance degradation and even failure of either the time domain methods or the frequency domain methods,a subspace based method was proposed to determine the time-differenceof-arrival of multiple signals with the same period of time and band of frequency,by using three or more than there radio receivers to receive the signals. To a certain extent,it meets the needs of the application of anti-interference for target localization and simultaneous radio positioning of multiple emitters. The simulation results show that the proposed method can estimate the time-difference-of-arrival between receivers for multiple signals.
出处
《兵器装备工程学报》
CAS
2016年第9期96-99,共4页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金(U1533125)
关键词
多信号
时差估计
子空间
multiple signal
time delay estimation
subspace method
