不同发射波形下多机协同探测雷达系统信号建模与性能分析

Modeling and Analysis of Multiple AEWs Coordinated Detection Radar System with Different Transmit Waveform

多机协同探测雷达系统利用目标在不同机载雷达间的径向速度差异实现目标的有效检测,该系统已成为当前机载雷达领域的研究热点。该文首先建立了不同发射波形条件下多机协同探测雷达系统的信号模型,并给出了基于广义似然比(Generalized Likelihood Ratio Test,GLRT)准则的自适应检测器及其渐进统计分布特性,最后通过计算机仿真分析了3种特定发射波形下的运动目标检测性能。仿真结果表明多机协同探测雷达系统中发射波形的变化会严重影响雷达系统的运动目标检测性能,且相同发射波形的雷达系统对不同运动速度的目标检测性能也存在区别。

Differences in target radial velocities of different airborne radar are used for target detection in a multiple Airborne Early Warnings （AEWs） coordinated detection radar system; this subject is currently a popular research topic. In this paper, a collaborative detection radar system model comprised of multiple AEWs with different transmit waveforms is constructed. The Generalized Likelihood Ratio Test （GLRT） based adaptive detector is then proposed and the approximated statistical characters of the detector are analyzed. Finally, the moving target detection performances of three selected transmit waveforms are analyzed by computer simulation; results show that the detection performance of the collaborative detection radar system is influenced by the transmit waveform, and that the detection performances of different velocity targets are different with the same transmit waveform.