Identification of rays in a signal registered from the drifting ship

• Autorzy: Stromkov A. A. , Kazarova A. Y. , Virovlyansky A. L. , Lyubavin L. Y.
• Konferencja: Proceedings of the 2 nd EAA International Symposium on Hydroacoustics 24-27 May 1999, Gdańsk-Jurata POLAND
• Języki publikacji: EN

Abstrakty

EN

Possibilities of ray identification in the ship tomography experiment in Western Mediterranean are discussed. The pulse signals (M-sequences) emitted by the stationary source located at the axis of the subsurface acoustic waveguide (the axis depth was 125 m) were registered from the board of the drifting shift. Frequency Doppler shift was compensated. It is shown that in the signal registered by a single hydrophone, depending on the hydrophone depth, arrivals of fours rays with steep grazing angles (at small depths), arrivals of pair or arrivals of individual rays (at greater depths) can be resolved: Due to the drift the distance between the source and receiver was always known with some error. In spite of this fact the measured differences in ray travel times and in travel times of fours of rays were in good agreement with the theoretical predictions obtained using a ray code.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1999
• Tom: Vol. 2
• Strony: 313--316
• Opis fizyczny: Rys.

Twórcy

autor

Stromkov A. A.

• Institute of Applied Physies RAS,46 Ulyanova Str., 603600 Nizhny Novgorod, RUSSIA

autor

Kazarova A. Y.

• Institute of Applied Physies RAS,46 Ulyanova Str., 603600 Nizhny Novgorod, RUSSIA

autor

Virovlyansky A. L.

• Institute of Applied Physies RAS,46 Ulyanova Str., 603600 Nizhny Novgorod, RUSSIA

autor

Lyubavin L. Y.

• Institute of Applied Physies RAS,46 Ulyanova Str., 603600 Nizhny Novgorod, RUSSIA