A Tracking and Telemetry System for Severe Multipath Acoustic Channels

Author

Chase, Jay V.

Author_Institution

Appl. Res. Div., Naval Undersea Warfare Eng. Station, Keyport, WA, USA

fYear

1981

fDate

16-18 Sept. 1981

Firstpage

35

Lastpage

39

Abstract

Underwater telemetry systems require special design when they are to be used in severe multipath acoustic channels. This paper describes a modulation/signal processing method, called Spaced-Frequency-Shift Keying (SFSK), that effectively penetrates such channels. SFSK includes features for reliable message validation, message identification, transfer of binary telemetry, and operation over Doppler ranges commensurate with maximum-speed underwater vehicles. Although SFSK was developed for the specific purpose of underwater vehicle tracking, it is easily adaptable to a wide range of underwater communications applications.

Keywords

acoustic signal processing; frequency shift keying; geophysical signal processing; message passing; multipath channels; target tracking; telecommunication network reliability; underwater acoustic telemetry; underwater vehicles; Doppler ranges; SFSK; binary telemetry; maximum-speed underwater vehicle; message identification; message validation reliability; modulation-signal processing method; multipath acoustic channel; spaced frequency shift keying; telemetry system; tracking system; underwater communication application; underwater telemetry system design; underwater vehicle tracking; Acoustic measurements; Acoustic propagation; Frequency shift keying; Interference; Sea measurements; Sonar equipment; Telemetry; Underwater acoustics; Underwater tracking; Underwater vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 81

Conference_Location

Boston, MA

Type

conf

DOI

10.1109/OCEANS.1981.1151458

Filename

1151458