中国物理B ›› 2010, Vol. 19 ›› Issue (3): 30506-030506.doi: 10.1088/1674-1056/19/3/030506
邓科, 张路, 罗懋康
Deng Ke(邓科)†, Zhang Lu(张路), and Luo Mao-Kang(罗懋康)‡
摘要: The chaotic oscillator has already been considered as a powerful method to detect weak signals, even weak signals accompanied with noises. However, many examples, analyses and simulations indicate that chaotic oscillator detection system cannot guarantee the immunity to noises (even white noise). In fact the randomness of noises has a serious or even a destructive effect on the detection results in many cases. To solve this problem, we present a new detecting method based on wavelet threshold processing that can detect the chaotic weak signal accompanied with noise. All theoretical analyses and simulation experiments indicate that the new method reduces the noise interferences to detection significantly, thereby making the corresponding chaotic oscillator that detects the weak signals accompanied with noises more stable and reliable.
中图分类号: (Control of chaos, applications of chaos)