The Linear Frequency Modulation Pulse Signal Adaptive Detection Method

DOI

10.2991/ameii-15.2015.53How to use a DOI?

Keywords

LFM; pulse compression; correlation peak detection; adaptive detection

Abstract

It is first elaborated that when the transmission time of underwater acoustic waves is estimated from the transmitting end to the receiving end, LFM pulse signal is often used, because after it is processed through matched filtering, a very important phenomenon will produce, which is pulse compression that a wide pulse in the time dimension is squeezed into a narrow pulse, so that transmission time can be accurately estimated; secondly it is explained that due to the multipath effect in the shallow water, reverberation signal in the propagation process and environmental noise and other factors, when a common detection method of fixed threshold is used, often the wrong detection can be caused, an adaptive detection method is presented for this problem, that is based on the pulse compression of the LFM signal, and the adaptive detection algorithm, the correlation peak of sound waves reach time is detected; finally through processing simulated data and measured data of the sea, it is verified that the this method is effective.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Feng Gao
AU  - Bing Jia
AU  - Guijuan Li
AU  - Mingwei Zhang
PY  - 2015/04
DA  - 2015/04
TI  - The Linear Frequency Modulation Pulse Signal Adaptive Detection Method
BT  - Proceedings of the International Conference on Advances in Mechanical Engineering and Industrial Informatics
PB  - Atlantis Press
SP  - 290
EP  - 294
SN  - 2352-5401
UR  - https://doi.org/10.2991/ameii-15.2015.53
DO  - 10.2991/ameii-15.2015.53
ID  - Gao2015/04
ER  -