CutFM sonar signal design.

Noemm, Meelis and Hoeher, Peter (2015) CutFM sonar signal design. Applied Acoustics, 90 . pp. 95-110. DOI 10.1016/j.apacoust.2014.10.011.

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Sonar-based underwater surveillance, including the problem of diver detection, is a challenging task. Particularly in reverberation limited environments like harbors and coastal waters, it is usually essential to utilize the Doppler effect caused by the target movement, in order to separate the diver from the quasistationary background. The common choice for Doppler processing systems is to use the continuous wave (CW) signal or one of its modifications. However, it is known that the CW waveform provides poor range resolution. In this paper a frequency modulation (FM) based Doppler selective signal, called cutFM, is introduced. The cutFM signal is characterized by a comparable Doppler resolution as that of the CW signal, but with improved range resolution. The paper provides Doppler processing gain estimates and the theoretical predictions concerning cutFM are supported by measurement results. (C) 2014 Elsevier Ltd. All rights reserved.

Document Type: Article
Additional Information: Times Cited: 0
Keywords: Sonar, Diver detection, Signal design, Frequency modulated, Doppler processing gain, Reverberation
Research affiliation: Kiel University
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.apacoust.2014.10.011
ISSN: 0003-682X
Projects: Future Ocean
Date Deposited: 18 Oct 2016 03:47
Last Modified: 23 Sep 2019 23:27

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