发明名称 |
ROBUST UNDERWATER COMMUNICATION SYSTEM |
摘要 |
A robust underwater communication system, for communication between an acoustic signal transmitter and a remotely positioned acoustic signal receiver, wherein transmitted data is carried by a plurality of symbols each having two components one of which comprises a distinctive bit code and the other of which appertains to the character of the symbol as a whole wherein the character of successive symbols is stepped through a predetermined continuously repeating sequence of distinctive steps each of which occurs once in the sequence, the signal receiver being operated synchronously with the signal transmitter and comprising a correlator arrangement responsive both to the bit code and to the character of received signals for effecting demodulation and having a plurality of outputs one for each symbol, so that as each symbol is detected a signal on the output to which it corresponds pre-dominates and amplitude detector means responsive to the outputs from the correlator arrangement for providing an output signal corresponding to the data transmitted.
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申请公布号 |
US2011096632(A1) |
申请公布日期 |
2011.04.28 |
申请号 |
US20050570422 |
申请日期 |
2005.05.03 |
申请人 |
PEARCE CHRISTOPHER D;SMITH RICHARD J;SMITH ROGER SYDNEY DUDLEY;SMITH JUDITH JANE |
发明人 |
PEARCE CHRISTOPHER D.;SMITH RICHARD J.;SMITH ROGER SYDNEY DUDLEY;SMITH JUDITH JANE |
分类号 |
H04B11/00;H04L1/00;H04L27/00 |
主分类号 |
H04B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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