【摘要】 现有高频地波雷达大多采用单一工作频率,较易受外部干扰影响,且回波包含信息有限。设计与实现了一种便携式高频地波雷达双频接收天线,通过对原有单频接收天线电路进行修改,增加频率控制端和开关电路,实现了三元交叉环/单极子接收天线同时双频工作的功能。室内测试及现场实验结果均验证了该双频接收天线的有效性。更多还原

【Abstract】 Most of the existing high frequency ground wave radars use single working frequency,which make it is more vulnerable to external interference,and the information echo contains is limited. The design and implementation of a portable dual-frequency HF radar antenna is descrbed,based on the original single frequency receiving antenna circuit modification with the frequency control and switch circuit,which realized the ternary cross-loop /monopole antenna working at double-frequency at the same time. Indoor testing and field experimental results verify the validity of the dual-frequency receive antenna.更多还原