Performance Of An MFSK Acoustic Telemetry System

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI:10.1109/OCEANS.1992.607712

S. Merriam, D. Frye, J. Catipovic

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Abstract

A low power, medium data rate acoustic telemetry system has been developed at Woods Hole Oceanographic Institution to address a broad range of underwater communication needs. The system utilizes advanced digital signal processing techniques to implement an MFSK telemetry scheme capable of data rates up to 5000 b/s. A series of shallow and deep water tests of this system have been performed over ranges from a few hundred meters to 2500m which allow system performance to be characterized. Operation over the vertical and horizontal channel has been investigated. The paper will provide a system description, summarize the results of the in-water tests and compare the results to the expected theoretical performance of the system in a realistic ocean channel. Typical bit error rates for the acoustic telemetry link over the vertical channel are to lo4 over ranges of 500 to 2.500111 using directional transmit and receive transducers with the receiver hydrophone suspended a short distance below the surface. Performance over the shallow-water horizontal path is about an order of magnitude worse. Recent improvements in link performance using more sophisticated error correction coding will also be reported. dor.

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MFSK声遥测系统的性能研究

伍兹霍尔海洋研究所开发了一种低功耗、中等数据速率的声学遥测系统，以满足广泛的水下通信需求。该系统利用先进的数字信号处理技术实现数据速率高达5000 b/s的MFSK遥测方案。该系统的一系列浅水和深水测试已经在几百米到2500米的范围内进行，从而可以表征系统的性能。对垂直和水平通道的操作进行了研究。本文将提供系统描述，总结水中试验的结果，并将结果与系统在实际海洋通道中的预期理论性能进行比较。垂直通道上的声学遥测链路的典型误码率为lo4，范围为500至2.500111，使用定向发射和接收换能器，接收水听器悬挂在水面以下一小段距离。在浅水水平路径上的性能大约差一个数量级。还将报告使用更复杂的纠错编码对链路性能的最新改进。金龟子。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology

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