e-ISSN:0976-5166
p-ISSN:2231-3850


INDIAN JOURNAL OF COMPUTER SCIENCE AND ENGINEERING

Call for Papers

Apr 2019 - Volume 10, Issue 2
Deadline: 5 Apr 2019
Notification: 15 Apr 2019
Publication: 30 Apr 2019

June 2019 - Volume 10, Issue 3
Deadline: 5 June 2019
Notification: 15 June 2019
Publication: 30 June 2019

Indexed in

ABSTRACT

Title : COHERENCE PROPERTY ESTIMATION FOR VARIOUS OCEAN DEPTHS
Authors : V.G.Sivakumar, Dr.V.Rajendran
Keywords : Ambient noise; coherence; shallow water; hydrophone depths.
Issue Date : Apr-May 2013
Abstract :
Under water sound serves as a very effective communication which can be made to vary in amplitude, frequency, and periodicity. These three variables are able to produce extremely wide and complex range of signals. Ambient noise and determination of its source is the biggest challenge in underwater acoustics industry. Yet ambient noise fields’ coherence is seen to be stable and hence can be utilized for determining seabed properties. Hydrophones in the form of vertical linear array at shallow depth of around 30m in the Arabian sea region are used for coherence estimation. To make better measurements of noise, it is preferred to avoid places where there is water movement relative to hydrophone array and cables. For various depths of hydrophones, the power spectrum and coherence plot of amplitude versus frequency are done and examined.
Page(s) : 80-85
ISSN : 0976-5166
Source : Vol. 4, No.2