Underwater communication system

Details Underwater communication system Underwater communication system

H - Electricity

04

B

H04B 11/00 (2006.01) H04B 13/02 (2006.01)

Patent

CA 2054915

Abstract of the Disclosure Underwater Communication System An underwater communication system provides reliable underwater transmission of digitally encoded communications as a series of consecutive acoustic frequency pulses (40) wherein the frequency of each pulse corresponds to one of two preselected frequency settings (FA,FB). A communication is transmitted as a series of frequency pulses (40) divided into a header section (44), a message section (45), and a parity bit (46). The header bits are of a first pulse width (T1), and the message and parity bits are of a second pulse width (T2). Received communications are converted into an electrical receive signal by a hydrophone (76), which is processed by a sonar control (61) and provided to a CPU (62) which decodes the communication for display on a display unit (60). -18-

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