Applying Improved Chaos System to Weak Signal Detection

DOI

10.2991/iiicec-15.2015.351How to use a DOI?

Keywords

Chaos; Improved chaos system; Weak signal detection

Abstract

Chaos system possesses the characteristics that it is immune to noise and signal whose frequency is quite different from that of inner signal in chaos system and it is sensitive to the signal whose frequency is same as that of inner signal in chaos system. Therefore the method for detection of weak signal hides in strong broad band background noise based on chaos theory has developed rapidly. But it finds in the actual simulating process that pure noise inputs into chaos system which is under critical state will probably induce to system state variation. And signal whose frequency is same as inner signal while phase is different from inner signal inputs into chaos system which is under critical state, the system state variation will probably not happen. The appearance of these cases reduced the detecting accuracy of weak signal. The setting method is proposed in the paper to the question. The amplitude of inner signal in chaos system is chosen to less than the threshold of chaos critical state, which can avoid system state variation induced by pure noise. Expanding the chaos system to four forms can detect input signal with different original phase. Simulation results verify the validity of the improved method.

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  - Min Shi
AU  - Chang Liu Jin
PY  - 2015/03
DA  - 2015/03
TI  - Applying Improved Chaos System to Weak Signal Detection
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 1591
EP  - 1595
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.351
DO  - 10.2991/iiicec-15.2015.351
ID  - Shi2015/03
ER  -