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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This is particularly true for missiles guided by the Global Positioning System (GPS) the long-range-strike weapons that receive guidance signals and targeting cues from a constellation of satellites.

这一点对于采用全球定位系统（GPS）制导的导弹来说，就更尤为明显了。GPS导弹是一种从卫星群接收制导信号和目标信息的远程攻击武器。

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