Title :
Description of and experimental results for a high data rate underwater acoustic telemetry link
Author :
Estes, Lee ; Fain, Gilbert ; Caron, Paul
Author_Institution :
Dept. of Electr. & Comput. Eng., Southeastern Massachusetts Univ., North Dartmouth, MA, USA
Abstract :
A wideband system (40 kHz-50 kHz) whose coding is self-synchronous and is adjustable for variations in coherence and reverberation times to obtain a maximum reliable data transmission rate for any given set of conditions is presented. To maximize data rate the approach takes full advantage of system bandwidth. At its simplest level a spectral line is used to represent a bit. The major delimiters of multispectral transmission (within a given system bandwidth) in this environment are coherence time due to Doppler spreading and reverberation time due to multiple transmission path. Banks of different frequencies are sequentially transmitted, each bank being reused after the reverberation time. Theory, experimental setup, and preliminary results are presented
Keywords :
acoustic applications; encoding; telemetering; underwater sound; 10 Hz; 40 to 50 Hz; Doppler spreading; adjustable coding; coherence time; high data rate underwater acoustic telemetry link; multiple transmission path; multispectral transmission; reverberation time; self-synchronous coding; wideband system; Bandwidth; Digital signal processing chips; Frequency; Hardware; Reverberation; Signal design; Telemetry; Transmitters; Underwater acoustics; Wideband;
Conference_Titel :
Autonomous Underwater Vehicle Technology, 1990. AUV '90., Proceedings of the (1990) Symposium on
Conference_Location :
Washington, DC
DOI :
10.1109/AUV.1990.110472
