The operating band of an individual antenna covers e. g. the frequency range used by a radio system or only the transmitting or receiving band in that range.
单个天线的工作频带覆盖了例如由无线电系统所使用的频率范围或者只是该频率范围内的发射频带或接收频带。
The research work of this article is the hardware design of receiving and transmitting unit in the under-water acoustic head of Long Range Ultra short Base-Line Positioning System.
这套系统主要由水下应答器、传载水下声头和船载主控机组成。本论文的研究工作主要是长程超短基线定位系统中传载水下声头内收发单元的硬件设计与实现。
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