Community Research and Development Information Service - CORDIS

Abstract

After initial tests in the North Atlantic had shown that data could be transmitted both through 50 m of deep sea sediments and 5000 m of water, a low power receiving and decoding system was developed. The incoming data are transformed from the low energy time-delayed keying used for the acoustic transmissions into ASCII, before a specialised UHF transmitter sends them via the European Space Agency's geostationary Meteosat satellite to the laboratory in Europe. This paper discusses the design and development of the receiving and decoding system, from the hydrophone, filters, preamplifiers and detector, to the microprocessor-controlled decoder.

Additional information

Authors: WEYDERT M, JRC Ispra (IT);MURRAY C N, JRC Ispra (IT);PELLETIER H, Suber S.A., Brest (FR)
Bibliographic Reference: EUR 12776 EN (1991) 37 pp., MF, ECU 4, blow-up copy ECU 5
Availability: (2)
Record Number: 199110357 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en