Determination of the path of a sound source moving in an inhomogeneous medium

Zuikova, N. V.; Svet, V. D.; Shatskov, Yu. A.

doi:10.1134/s1063771006050095

Cited by 3 publications

(2 citation statements)

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“…The basic idea of the speckle method is that under certain assumptions the formed angular spectrum of modes can be regarded as a unique speckle pattern. If at some shift of the echo source, this pattern will not change its structure, speckle interferometry method can be used to measure the trajectory of the source, without resorting to MFP or TRA methods, [6] [7]. Let's place a horizontal antenna in the waveguide at a distance R from echo source.…”

Section: Speckle Tracking In Waveguidesmentioning

confidence: 99%

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The Peculiarities of Acoustical Monitoring of Moving Objects in Shallow Water Areas

Monteiro¹,

Svet²,

Sandilands³

2014

OJA

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The article considers peculiarities of underwater monitoring of moving objects in the shallow water areas, particularly seaports. These areas are characterized by a multitude of factors influencing the efficiency of detection. Nonstationarity conditions of sound propagation and specific interference caused by shipping are the major factors. The various algorithms for the space-time signal processing have been tested and some experimental results are presented. It has been shown that the use of clipped mode in conjunction with the correlation processing of wideband signals and subsequent speckle tracking allow realizing high efficiency of monitoring.

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Section: Speckle Tracking In Waveguidesmentioning

confidence: 99%

“…m possible shift of distance can be about 750 m and phase factor will not change its form that is necessary to implement the method of speckle interferometry [7]. At higher frequencies, this condition becomes more severe, for example for 100 F = kHz the allowable variations in distance between two expositions becomes the order of meters or less.…”

Section: =mentioning

confidence: 99%