Time variable gain for long range sonar with chirp sounding signal

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

Abstrakty

EN

The main purpose of applying Time Variable Gain (TVG) in active sonars with digital signal processing is to reduce dynamic range of echo signal and adapt it to the dynamic range of the analogue to digital conversion. With high transmission losses level, the dynamic range of the input signal in long range sonars can be very high and even exceed 200 dB. When chirp sounding signals with matched filtration are used, sonars can reach very long ranges. The article presents optimisation of TVG control for long range sonars. It also looks at the influence of chirp sounding signal compression, the result of digital matched filtration, for the TVG controlling. The examples of obtained results are presented.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2007
• Tom: Vol. 10
• Strony: 117--122
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Marszal J.

autor

Ostrowski Z.

autor

Schmidt J.

autor

Kilian L.

autor

Jedel A.

autor

Schmidt A.

• Gdansk University of Technology, Faculty of Electronics Telecommunications and Informatics, Department of Marine Electronic Systems Narutowicza 11/12, 80-952 Gdansk, Poland,

Bibliografia

• [1] R. Salamon, Systemy Hydrolokacyjne, Gdańskie Towarzystwo Naukowe, Gdańsk 2006.
• [2] C. E. Cook, M. Bernfeld, Radar Signals, Academic Press, New York, London 1967.
• [3] R. Salamon, J. Marszal, W. Leśniak, Broadband Sonar with a Cylindrical Antenna, ACTA ACUSTICA united with ACUSTICA, Vol. 92, 2006, s. 153-155.
• [4] L. Kilian, J. Marszal, TVG and RVG as methods of making sonar received signals stationary - problems of implementations, Proc. Conf. Messtochastic, Rostock 1984, pp. 76-80.
• [5] L. Kilian, J. Marszal, Time Variable Gain in Sonar Systems, Proc. XXX Open Seminar on Acoustics, Gdańsk 1983, pp. 279-283.