Abstract

This paper presents a study of the prerequisites and the original way of transition from a quasi-monostatic antenna system to a monostatic one as applied to ultrawideband pulsed contact radar subsurface sounding at shallow depths. For this purpose, the joint application of ultrawideband electric “Bow-Tie” and magnetic “Bi-Quad” antennas is investigated. The mutual arrangement proposed in this work allows reducing to zero the distance between the centers of the antennas in the plane orthogonal to the direction of signal emission-reception. The results of full-scale tests with the corresponding processing of the obtained ensembles by the example of probing the human body for the detection and determination of the parameters of biological rhythms and a tree trunk 58 cm in diameter showed satisfactory results for the radar with a central frequency of 1.5 GHz. At the same time, the suppression of the useful signal received due to the application of the described design was only 2.3 dB at an acceptable level of the direct signal, which does not lead to overloading of the radar stroboscopic receiver input.

中文翻译：

---

用于研究人体生物节律和介电物体内部不均匀性的单站脉冲超宽带雷达天线

摘要

本文研究了应用于浅层超宽带脉冲接触雷达地下探测的先决条件和从准单基地天线系统过渡到单基地天线系统的原始方法。为此，研究了超宽带电“Bow-Tie”天线和磁“Bi-Quad”天线的联合应用。这项工作中提出的相互布置允许将与信号发射-接收方向正交的平面中天线中心之间的距离减小到零。以探测人体以检测和确定生物节律参数和直径 58 cm 的树干为例，对所获得的集合进行相应处理的全尺寸测试结果显示，雷达的结果令人满意。中心频率1.5GHz。同时，由于应用了所描述的设计，在可接受的直接信号水平上，对接收到的有用信号的抑制仅为2.3 dB，这不会导致雷达频闪接收器输入过载。