Small antenna for a dipping sonar

• Autorzy: Marszal J. , Jedel A. , Ostrowski Z.
• Języki publikacji: EN

Abstrakty

EN

The dome enclosing the antenna of dipping sonar should be of the smallest possible size. Presented in the paper is a concept of hydroacoustic antennas of active and passive sonar. The active antenna performs mechanical scanning while the passive antenna uses the orthogonal array of gradient hydrophones. In addition to that the antenna array includes ultrasonic transducers of a sound velocity profiler, a pressure sensor for measuring the depth of antenna submergence. With that many sources of signal in the sonar's ease, a multiple fibre cable is required or signal modulation to transmit the signals over a limited number of wires. The sonar in question uses distribution over time and an original modulation method for simultaneous transmission of several signals using a cable channel. Block diagram and formulas describing the entire signal from the sonar's antenna are included.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2001
• Tom: Vol. 4
• Strony: 169--172
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Marszal J.

• Technical University of Gdańsk Faculty of Electronics, Telecommunication and Informatics, Department of Acoustics, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Jedel A.

• Technical University of Gdańsk Faculty of Electronics, Telecommunication and Informatics, Department of Acoustics, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Ostrowski Z.

• Technical University of Gdańsk Faculty of Electronics, Telecommunication and Informatics, Department of Acoustics, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

Bibliografia

• 1. R. Salamon, Detection and positioning of targets in passive sonars, Trans. of XLIV Open Seminar on Acoustic, Vol.1 , 103-112. Gdańsk - Jastrzębia Góra 1997.
• 2. R. Salamon, J. Marszal, A. Raganowicz, M. Rudnicki, Application of Fourier transformation in passive sonar with gradient hydrophones, Proc. of 5 th ECUA, Vo1.2, 1115-1120, Lyon 2000.
• 3. Salamon , J. Marszal, L.Kilian, A. Jedel, New signal processing in passive sonar with gradient antenna, HYDROACOUSTlCS, Vol. 1,129-134, Gdynia 2000.