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| 1 | Extracting Chaotic Signal from Noisy Environment: A Random Searching Method显示文摘The problem of Blind source extraction(BSE) regarding a chaotic signal is addressed in this paper, by employing the newly defined Proliferation exponent(PE). The properties of gradient pursuit algorithm based on PE are further articulated, especially the infelicity to tackle a BSE problem. Subsequently, we devise a constraint optimization algorithm called Orthogonal random searching(ORS) to accomplish the optimization task,which in essence searches for optimal solutions with the principle of Markov chain Monte Carlo(MCMC). Experimental results reveal that this PE-based random searching method can extract the desired chaotic signal among multiple Gaussian mixtures, as well as showing robustness against noise contamination. | LI Guangming LYU Shanxiang | 2015 | Chinese Journal of Electronics2015，24，3： | 0 |
| 2 | 混沌密码算法及相关进展(二)显示文摘混沌是由确定非线性系统产生的一种类似随机的复杂动力学行为。它的许多特性,如轨道长期不可预测性、良好的伪随机特性、对初始条件和系统参数的敏感性等,使其能够满足密码设计系统中的混淆与扩散原则,因而混沌系统为密码学的技术研究开辟了新的路径。自上世纪90年代被首次提出来后,混沌密码研究取得了许多重要的研究成果。本文主要对混沌密码的发展情况作个简要的概述,介绍了混沌系统和混沌密码的关系,混沌密码算法的研究以及未来的发展趋势等。 | 田朝晖 赵耿 殷岁 | 2017 | 北京电子科技学院学报2017，25，2： | 0 |
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