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Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

What is the number one characteristic that impacts you the most regarding your interaction with another person?

什么是排名第一的特点，影响你最对您的互动与他人？

That is leading Dr Chatterjee to suggest that the two big impacts did take place at different times.

这使 Chatterjee 博士提出，两次大的撞击确实在不同的时间发生过。

Based on the examples analyzed,this paper mainly discusses the impacts of the polynomial degree,fit time span and interval of the fitting points when using chebyshev polynomial to fit the satellite orbit,the situation using more orbital elements and the area and choosing of the orbital elements are also discussed at last.

以实例分析为基础，主要讨论了利用切比雪夫多项式拟合GPS卫星轨道时多项式阶数、时段长度、拟合点间隔等因素的设置问题；并对使用多组轨道参数进行轨道拟合的情况进行了分析；最后讨论了轨道参数的使用范围和选择问题；得出了有用的结论。

Note: Do not subject the chronograph to strong impacts while chronograph timing is in progress.

注：不要受到强烈冲击的计时表计时，而时间是在进步。

However allergen,lectins and chymotrypsin inhibitor impacts on Health and Food Safety.

但花生也有一些缺点，花生中含有胰蛋白酶抑制剂、过敏原、凝集素等抗营养成份，影响健康和食品安全。

The monetary policy of China impacts its circumjacent economies, just as China is playing more and more important roles in world economy.

东亚金融合作对于推进中国自身的经济金融利益同样十分重要。

CITS, 2004 However, as for the members within the supply chain, several impacts are mentioned as following.

对于供应链中的成员来说，以下是几个值得一提的影响

Based on prediction of recent 100 years' climatic changes with climate models, the impacts of future climatic changes on climate and environment are analyzed.

在采用气候模式对未来近百年的气候变化做出一定预测的基础上，分析未来可能出现的气候变化所造成的对气候环境方面的影响。

Tacking burning fuel oil as an example, the impacts of excess air coefficient a on the thermal efficiency and the corrosion of furnace tubes in tubular furnaces were discussed in this paper.

以燃烧燃料油为例，讨论了过剩空气系数α对管式加热炉热效率和炉管腐蚀的影响，并从设计、操作等方面针对这些影响提出了一些建议。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。