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arXiv 1208.2945nlin.CD
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基于延迟反馈环的超高频分段线性混沌

Ultra-high-frequency piecewise-linear chaos using delayed feedback loops

Seth D. Cohen, Damien Rontani, Daniel J. Gauthier

摘要:

我们报告了一个超高频(> 1 GHz),分段线性混沌系统设计的低成本,商用电子元件。该系统由两个电子延时反馈回路组成:一个主模拟回路,具有可变增益,可产生以2 GHz为中心的多模振荡;另一个副回路,通过类似数字的信号在两个不同值之间切换可变增益。我们通过实验和数值计算证明,这种方法可以同时产生模拟和数字混沌,其中数字混沌可以用于分割系统的吸引子,形成具有抗噪声通信和雷达中潜在应用的符号动力学的基础。

英文摘要:

We report on an ultra-high-frequency (> 1 GHz), piecewise-linear chaotic system designed from low-cost, commercially available electronic components. The system is composed of two electronic time-delayed feedback loops: A primary analog loop with a variable gain that produces multi-mode oscillations centered around 2 GHz and a secondary loop that switches the variable gain between two different values by means of a digital-like signal. We demonstrate experimentally and numerically that such an approach allows for the simultaneous generation of analog and digital chaos, where the digital chaos can be used to partition the system's attractor, forming the foundation for a symbolic dynamics with potential applications in noise-resilient communications and radar.

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