scholarly journals Research of weak signal detection based on super‐regenerative chaotic oscillator

2021 ◽  
Author(s):  
Yifan Yang ◽  
Jian Xu ◽  
Yun Kuang ◽  
Hanfen Tu ◽  
Haoran Wei ◽  
...  
Keyword(s):  
Signal Detection ◽  
Chaotic Oscillator ◽  
Weak Signal ◽  
Weak Signal Detection

Design of a New 3D Chaotic System Producing Infinitely Many Coexisting Attractors and Its Application to Weak Signal Detection

2021 ◽  
Vol 31 (15) ◽  
Author(s):  
Bing Liu ◽  
Xiaolin Ye ◽  
Gang Hu
Keyword(s):  
Signal Detection ◽  
Chaotic System ◽  
Chaotic Behavior ◽  
Initial Conditions ◽  
Control Function ◽  
Detection System ◽  
Chaotic Oscillator ◽  
Weak Signal ◽  
Weak Signal Detection ◽  
Coexisting Attractors

This paper proposes a new 3D chaotic system, which can produce infinitely many coexisting attractors. By introducing a boosted control of cosine function to an original chaotic system, as the initial conditions periodically change, the proposed chaotic system can spontaneously output infinitely many chaotic sequences of different amplitudes in two directions in the phase plane. This means that the proposed system can output more key information as a pseudo-random signal generator (PRSG). This is of great significance in the research of weak signal detection. In comparison with the original chaotic system, the chaotic behavior of the proposed system is obviously enhanced due to the introduction of the boosted control function. Then, by adding the mathematical models of a weak signal and a noise signal to the proposed chaotic system, a new chaotic oscillator, which is sensitive to the weak signal, can be restructured. With the change of weak signal amplitude and angular frequency, the dynamical state of the detection system will generate a big difference, which indicates that the weak signal can be detected successfully. Finally, the proposed chaotic system model is physically realized by DSP (Digital Signal Processing), which shows its feasibility in industrial implementation. Especially, since a third-order chaotic system is the lowest-dimensional continuous system that can generate infinitely many coexisting attractors, the proposed chaotic system is of great value in the basic research of chaos.

scholarly journals A Memristor Based Chaotic Oscillator for Weak Signal Detection and Its Circuitry Realization

2021 ◽  
Author(s):  
Kaifeng Dong ◽  
Kun Xu ◽  
Youyou Zhou ◽  
Chao Zuo ◽  
Leiming Wang ◽  
...  
Keyword(s):  
Signal Detection ◽  
Detection System ◽  
Signal To Noise Ratio ◽  
Detection Accuracy ◽  
Chaotic Oscillator ◽  
Weak Signal ◽  
Weak Signal Detection ◽  
Noise Performance ◽  
Detection Range ◽  
Implementation Scheme

Abstract A new type of weak signal detection system that combines the memristor and Van der pol-Duffing chaotic system has been proposed in this paper, and the dynamic characteristics of the system are studied. It is observed that the system can change from a chaotic state to a periodic state under different driving force amplitudes. Moreover, as compared with several classical chaotic oscillators, the numerical simulation results show that the system has stronger anti-noise performance with the detectable signal-to-noise ratio reaches -163dB, and has a wider detection range. Its detection accuracy is up to 1 × 10 −9 . More importantly, this paper provides the circuit implementation scheme of the system, and the weak signal can be detected with our designed circuit. This may offer a possible way for weak signal detection system with good performance in anti-noise performance, detection range and accuracy.

Weak signal detection based on the information fusion and chaotic oscillator

2010 ◽  
Vol 20 (1) ◽  
pp. 013104 ◽  
Author(s):  
Xiuqiao Xiang ◽  
Baochang Shi
Keyword(s):  
Signal Detection ◽  
Information Fusion ◽  
Chaotic Oscillator ◽  
Weak Signal ◽  
Weak Signal Detection

A Novel Method of High Frequency Weak Signal Detection Based on Chaotic Oscillator System and Wavelet Transform System

2011 ◽  
Vol 130-134 ◽  
pp. 2770-2773
Author(s):  
Shuo Shi ◽  
Jin Yan Li ◽  
Xue Mai Gu
Keyword(s):  
Wavelet Transform ◽  
Signal Detection ◽  
High Frequency ◽  
Signal To Noise Ratio ◽  
Chaotic Oscillator ◽  
Weak Signal ◽  
Weak Signal Detection ◽  
Signal To Noise ◽  
Weak Signals ◽  
Novel Method

Based on chaotic oscillator system and wavelet transform system, this paper proposes a novel method on high frequency weak signal detection. Chaotic system is a typical non-linear system which is sensitive to certain signals and immune to noise at the same time. Its properties demonstrate the potential application on weak signal detection. Due to the good localization in both time domain and frequency domain, the wavelet transform method can automatically adjust to different frequency components and increase the Signal-to-Noise Ratio. Starting from the analysis of advantages and disadvantages of two signal detection methods, we put forward a combined method that takes advantage of each method to detect weak signals with high frequency. The simulation results show that the novel method can detect weak signals with frequency in an order of magnitude of 107Hz, and the input Signal-to-Noise Ratio threshold could be-42.5dB.

Lateral growth of indium(III) selenide nanoribbons and their optoelectronic performance for weak signal detection

2021 ◽  
Vol 546 ◽  
pp. 149166
Author(s):  
Haibo Gan ◽  
Jidong Liu ◽  
Qiaoyan Hao ◽  
Di Wu ◽  
Peng Li ◽  
...  
Keyword(s):  
Signal Detection ◽  
Weak Signal ◽  
Lateral Growth ◽  
Weak Signal Detection

Research and analysis of hydro-acoustic weak signal detection technology

2016 ◽  
Author(s):  
Yu-Qiang Li ◽  
Yu-Kun Zheng ◽  
Xuan-Min Du
Keyword(s):  
Signal Detection ◽  
Weak Signal ◽  
Weak Signal Detection ◽  
Detection Technology
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