Accession Number:

ADD015663

Title:

Adjustable Frequency Diversity Acoustic Communications System.

Descriptive Note:

Patent, Filed 13 Dec 88, patented 21 May 91,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1991-05-21

Pagination or Media Count:

18.0

Abstract:

An underwater acoustic communication system provides an operator with adjustable frequency diversity so that data rates may be tailored to specific multipath environments. Transmitted messages are sent with precursor transmissionreception synchronization data and transmission parameter data so that the receiving communication end will recognize when message data starts, tone length as-well-as the frequency diversity of the transmitted message. Timing is extracted from the data to compensate for Doppler shift.

Subject Categories:

  • Non-Radio Communications
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE