塔康信标台全向发射脉冲幅度调制信号，隐含空中目标相对于信标台的方位和距离信息。
TACAN beacon transmits pulse amplitude modulation signals in all direction, including bearing and distance information relative to the beacon.
本发明公开一种宽频全向吸顶天线，包括：用于完成移动通信系统信号 的室内覆盖，包括：金属底板；
The invention discloses a wideband omnidirectional ceiling antenna which is used for finishing the indoor signal coverage of a mobile communication system.
为了实现对短波频段全空域低信噪比信号的良好接收，本文提出了一种窄波束全向接收的自适应天线阵。
In order to receive omnidirectional low-SNR signal of whole HF band, we present an adaptive omni-direction & narrow-beam receiving antenna array.
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