European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

BLYTH1-5 - Short range 50KHz underwater acoustic data including PN sequences, sinusoids in the range 40-60KHz, and MPSK modulated waveforms

Data holding centreUniversity of Newcastle upon Tyne School of Electrical, Electronic and Computer Engineering
CountryUnited Kingdom  United Kingdom
Time periodFrom 01 March to 25 May 1994
OngoingNo
Geographical area

The River Blyth estuary on the north east coast of the United Kingdom (55° 7.6'N, 1° 30.1'W)

Observations 
Parameters

Acoustic noise in the water column; Acoustic backscatter in the water column

Instruments

Acoustic backscatter sensors; acoustic tracking systems

Description 
Summary

The AIDA project aimed to demonstrate the feasibility of underwater acoustic telemetry systems dedicated to image transmission from an underwater vehicle swimming near the sea bed to a surface vessel. The project provided general solutions for the design of a large class of such systems and assessed their performance with real and synthetic underwater acoustic data. The project was primarily concerned with communication ranges of 500-3000m on the coastal or continental shelf (depth <300m) with relative transmitter to receiver speeds of <2m/s. Data rates of up to 25kbaud were considered with bit error rates of the order 10e-3. The test data were transmitted through a number of different underwater channels and the signals received at an array of 0.5-1 lambda spaced transducer elements on up to 8 channels were acquired at a 200KHz sampling rate. In the MS-DOS binary archive files all sample data are represented as signed integers. The data comprise pseudo random sequences, carrier frequency bursts (50KHz), sine waves at 40, 50 and 60KHZ and modulated 2DPSK. The data set represents tests performed on four separate occasions. All data have been examined for critical faults or noise.

OriginatorsUniversity of Newcastle upon Tyne School of Electrical, Electronic and Computer Engineering
Availability 
OrganisationUniversity of Newcastle upon Tyne School of Electrical, Electronic and Computer Engineering
AvailabilityLicence
Address

University of Newcastle upon Tyne School of Electrical, Electronic and Computer Engineering
Merz Court
Newcastle upon Tyne
Tyne and Wear
NE1 7RU
United Kingdom

Telephone+44-191-222-8850
Administration 
Collating centreBritish Oceanographic Data Centre
Local identifier1092001
Global identifier1543
Last revised2009-10-19