中文摘要：

在现代电子对抗中，针对诱饵背景下宽带相干多辐射源的测向问题，本文提出了基于单基线的宽带多辐射源个数估计及测向算法。首先，根据两个天线接收信号谱线共轭相乘产生的新信号谱线结构特征，对辐射源的个数进行估计；在辐射源个数已知的情况下，采用基于宽带信号相位谱的分数延时估计算法，间接地估计出各个辐射源发射的信号到达两个天线的时差，进而利用估计出的这些时差对各个辐射源进行测向。此方法设备简单，仅需要两个天线阵元组成的单基线系统。仿真结果表明，在一定条件下可以准确估计出宽带相干多辐射源的个数，并且能够同时对空间多个辐射源进行精确测向。

英文摘要：

In modern electronic warfare, for the direction finding of multiple wideband coherent radiation sources under the background of decoys, the algorithms for signal number estimation and direction finding of multiple wideband coherent radiation sources are presented based on single baseline in this paper. Firstly, new signals are created by using conjugate multiplication of signal spectrums received by two antenna arraies. According to the spectrum architectural feature of new signals, the number of radiation sources can be estimated. In case the number of sources is given, by using the fractional time delay estimation algorithm based on the wideband signal phase spectrum, the time delays between radiation source signals received by two antennas can be got indirectly. So the directions of these radiation sources can be found according to the time delays. The algorithms have the feature of simple equipment and only the single baseline composed of two antennas is required. The simulation results show that the number of multiple wideband coherent radiation sources can be estimated accurately and directions of multiple radiation sources can be found accurately under certain condition.