利用表面电磁波在水下传输高清晰度视频信号
Transmission of high-definition video signals underwater using surface electromagnetic waves
摘要：
介绍了一种工作在30 MHz频段、能够传输高清晰度水下实况视频图像的便携式无线电通信系统。该系统的运作是基于发射电磁表面波沿水-空气界面使用专门设计的表面波天线传播。由于表面电磁波的传播长度远远超过相同频率的体无线电波的趋肤深度，因此该技术对于水下几米距离上的视像通信是有用的。此外，该系统似乎在通过水-空气界面进行通信方面是有效的。
英文摘要：
A portable radio communication system operating in the 30 MHz band and capable of transmitting high-definition live underwater video images is presented. The system operation is based on launching electromagnetic surface waves propagating along water-air interface using specially designed surface wave antennas. Since the propagation length of the surface electromagnetic waves far exceeds the skin depth of bulk radio waves at the same frequency, this technique is useful for video communication underwater over distances of several meters. Also, this system appears to be efficient at communicating through the water-air interface.
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