冲激回波信号的双二重相关匹配滤波技术研究

Two Double Correlation Matched Filter Technology for the Pulse Echo Signal

超宽带冲激脉冲回波检测是超宽带雷达探测目标的关键,检测效能的高低将决定超宽带雷达的应用。在传统二重相关匹配滤波技术的基础上,提出了双二重相关匹配滤波技术。分析了双二重相关匹配滤波技术的检测原理,建立了超宽带冲激脉冲串回波信号模型,对比了不同信噪比下2种接收技术的仿真结果,仿真结果表明接收技术改进后能进一步抑制噪声,提高信噪比。研究对超宽带雷达接收机的设计有一定的借鉴和参考价值。

The detecting efficiency of ultra-wideband （UWB） pulse echo is the key to target detecting of UWB radar, which determines the use of UWB radar. Based on traditional double correlation match filter, a new detecting technique called two double correlation match filter is presented. Firstly, a theory of detecting technique based on two double correlation match filter is analyzed. Secondly, the model of UWB pulse is built. Finally, the simulative results of the two detecting techniques are compared and show that this model can decrease noise and increase signal noise ratio. This research can be a reference for designing ultra-wideband radar.