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The influence peculiarities of underwater currents on the low frequency hydroacoustic stationaryvertically distributed receiving systemстатья
- Авторы: Gordienko V.A., Nekrasov V.N., Krasnopistcev N.V.
- Журнал: Moscow University Physics Bulletin
- Номер: 4
- Год издания: 2014
- Издательство: Allerton Press
- Местоположение издательства: New York, N.Y., United States
- Аннотация: The features of the behavior of lengthy vertically distributed receiver systems (VDRS) for their use for the purposes of the low-frequency tomography of the ocean, which in the most prevalence of embodiment is a structure consisting of a cable-rope up to several hundred meters with the receiving module placed on its coaxially (hydrophones) or perpendicularly to the axis (accelerometers), buoy and anchor which support the predetermined spatial position of the system. The results of experiments performed with VDRS of 32 and 128 m in the White Sea. Underwater currents forcing on a VDRS results in vibration beginnings on the elements of the system, especially for cable-rope, 54 ВМУ. Серия 3. ФИЗИКА. АСТРОНОМИЯ. 2014. № 4 transmitted by hydrophones and leading to the formation pseudo sound signal at frequencies below 10–12 Hz, which under certain conditions can significantly exceed the background noise level area. These facts may significantly reduce the effectiveness of VDRS and limit the frequency range of measurement from the bottom. The similarity of the results of different experiments, says the existence of a general mechanism of vibration and occurrence of pseudo sound. The definition of such mechanism may provide a path to eliminate these undesirable effects and increase the frequency range VDRS in the infrasound range. Keywords: vector-phase methods, vector receiver, combo receiver, the sound power flow, Umov’s vector, the localization of sound sources, noise immunity, sonographic analysis of high-resolution metrology vector-phase methods, high-frequency geoacoustic emission.
- Добавил в систему: Гордиенко Татьяна Валерьевна