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Description: 使用非线性动力学中的一维和二维耦合格子模型研究两个声光双稳系统的时空混沌同步.将驱动系统的输出以适当的比例耦合到响应系统并进行均衡 , 能实现两系统的时空混沌同步.利用计算最大条件Lyapunov指数 , 给出达到同步所需的最小耦合强度与系统参数的关系. 数值实验表明 ,在小噪声影响时仍然可以实现两系统的同步 , 此法具有一定的抗干扰能力.-The use of nonlinear dynamics of one-dimensional and two-dimensional lattice model of coupled two acousto-optic bistable system of space-time chaos synchronization. Will drive the output coupling ratio appropriate to the response system and a balanced, able to realize the two systems spatiotemporal chaos synchronization. the use of calculating the maximum Lyapunov index, given the minimum required to achieve synchronous coupling strength and system parameters. Numerical experiments show that the effect of small noise can still realize the synchronization of two systems, this method has certain anti- interference.
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Author: xiaowang |
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Description: 本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力。-In this paper, two-dimensional chaotic map based on digital image watermarking algorithm, Chaos with random noise and the likelihood of extreme sensitivity to initial conditions and so on. Two-dimensional chaotic map will be scrambling after the digital watermark embedded image signal of the low-frequency coefficients in wavelet domain, the realization of a digital watermark hidden, security and stability the use of two-dimensional chaotic map on Arnold transform scrambling watermark signal, not only enhances the confidentiality of the watermark signal at the same time improve the visual image shear resistance attacks.
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Size: 668672 |
Author: lafeng |
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Description: 用这个小程序可以解杜芬方程，可以通过相图判断混沌状态，判断加入噪声和信号-With this little program can Xie Duffing equation to determine the phase diagram can be chaos, judge by adding noise and signal
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Size: 2350080 |
Author: 111 |
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Description: 基于混沌理论构建的信号检测系统具有敏感微弱周期信号和对噪声有强免疫力的特点,用于微弱信号检测领
域优势明显。实验室内研究需要产生包括混沌噪声在内的各种噪声,并叠加微弱周期信号作为微弱信号检测系统的信号
源。介绍一种基于LabVIEW平台并结合Matlab计算模块的混沌噪声发生器,可产生典型的3种混沌噪声:Logistic,Duff2
ing,Lorenz形式。该发生器将LabV IEW易于接口实现和Matlab计算精度高、编程简捷的特点相结合,具有结构清晰、通用
性强、易于实现、使用方便的特点。
-Built based on chaos theory, sensitive signal detection system with weak periodic signal and has a strong immunity to noise characteristics of the area for weak signal detection have obvious advantages. Laboratory studies need to generate, including noise, chaos, including a variety of noise and superimposed weak periodic signal as a weak signal detection system, signal source. Introduction of a platform based on LabVIEW and Matlab calculation module with the chaotic noise generator can produce the typical three kinds of chaotic noise: Logistic, Duff2 ing, Lorenz form. The generator will be LabV IEW easy interface, and Matlab calculation of high accuracy, simple programming features combined with a clear structure and versatility, easy to implement, easy to use features.
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Size: 495616 |
Author: xlmm |
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Description: ：Duffing振子相变对与参考信号频差较小的周期小信号具有敏感性，对白噪声和与参考信号频差较大的周期干扰信号
具有免疫力。利用语音的准周期性提出了一种基于混沌理论的语音端点检测新算法，讨论了如何利用Duffing振子的间歇混沌
特性来检测语音端点。将含噪语音作为Duffing振子的外部参考信号的摄动，根据系统相图是否改变来检测语音段和噪声段。
通过尺度变换并设计了振子阵列以检测频率范围较大的语音信号。实验结果表明，基于混沌的语音端点检测算法在低信噪比
下明显优于传统的能量语音端点检测法。-Duffing oscillator phase transform is sensitive to small signal that has tiny ~equency difference with the
referential signal，and immunes against random noise and larger interference signal that has larger frequency differ—
ence with the referential signa1．In this paper，a new method is proposed for endpoint detection based on chaotic the—
ory using the qusi—periodical characteristic of speech．How to test speech endpoint using intermittent chaos of Duffing
oscillator is discussed．There we take noisy speech as the perturbation of the referential signal of Duffing oscillators，
and we can test speech segments and noise segments according to phase trajectory．Oscillator array is designed and
connected with scale transform to detect the speech signal whose frequency range is wide． Experiments show that
chaotic method is superior to traditional energy method obviously under low SNR condition for endpoint detection．
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Size: 264192 |
Author: 王华 |
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Description: ：针对动力学方程未知且信噪比小的光混沌信号，采用小波多分辨分解算法对其进行噪音消
减．用Lorenz混沌信号对该算法的消噪效果进行了检验．提出利用互信息量法和Cao氏法来改进
小数据量法在时间延迟和嵌入维数计算上存在的主观选择性，对经过噪音消减的Lorenz混沌信号
利用此改进的小数据量法计算其最大Lyapunov指数．结果表明，信噪比可提高近10 dB左右，最
大Lyapunov指数计算误差可减少近30 ，并求得半导体放大器光混沌信号的最大Lyapunov指
数为0．389 6．-The wavelet multi—resolution decomposition algorithm was used for reducing noise of optical
chaos signals with dynamic equation unknown and low SNR．The algorithm was verified by Lorenz chaotic
signa1．The mutual information algorithm and Cao method were used to reduce the suhj ective in computing
the delay time and embedding dimension when applying the small data method to compute the largest
Lyapunov exponent．The largest lyapunov exponent of the de—noised chaos signal was calculated with this
improved method．The result shows that the SNR is increased by about 1 0 dB，and the error of the largest
Lyapunov exponent is reduced by 30 ．The largest Lyapunov exponent of the optical chaos signal 0．389 6
is obtained with this method．
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Size: 389120 |
Author: 王华 |
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Description: 本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。-In this paper, two-dimensional chaotic map based on digital image watermarking algorithm, Chaos is random, like noise and extreme sensitivity to initial conditions and so on.
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Size: 665600 |
Author: 陈万虹 |
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Description: 1.Experimental realization of a highly secure chaos communication under strong channel noise
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Size: 133120 |
Author: wang |
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Description: 复杂系统中控制噪声的研究论文，全英文，可供借鉴-Noise control in complex systems research papers, in English, for reference
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Size: 156672 |
Author: 羊羊羊 |
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Description: 参数控制噪声干扰下的混沌数字通信,希望对大家有用啊-Parameter control noise of chaos under the digital communication
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Size: 180224 |
Author: haha |
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Description: 一类混沌保密通信，希望对大家有用啊，尤其是通信专业的啊-Parameter control noise of chaos under the digital communication
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Size: 292864 |
Author: haha |
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Description: 1. BPSK modulation of data which ever you input (default data is
“MANIPAL REDDY”).
2. MANIPAL REDDY is changed into ASCII Format and into two-bit
format for BPSK Modulation.
3. Chaos is used for spreading the binary bit sequence.
4. Uniformly distributed Noise is added to Spread signal.
5. After reception Chaotic Chip sequence is used to recover message .
6. Filter is used for removing spikes and noise.
7. Note the filter is used is just for showing a little realisitic picture.
8. Appropriate filter should be used.
9. The original data in binary and recovered data in binary format are
compared
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Size: 5120 |
Author: Ahmed |
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Description: 使用混沌与分形分析的例程，MBGQyrE参数粒子图像分割及匹配均为自行编制的子例程，相关分析过程的matlab方法，数学方法是部分子空间法，MCSIKVK条件均值便宜跟踪的示例，包括调制，解调，信噪比计算。- Use Chaos and fractal analysis routines, MBGQyrE parameter Particle image segmentation and matching subroutines themselves are prepared, Correlation analysis process matlab method, Mathematics is part of the subspace, MCSIKVK condition Example tracking mean cheap, Includes the modulation, demodulation, signal to noise ratio calculation.
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Size: 6144 |
Author: wdbzbm |
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Description: 是一种双隐层反向传播神经网络，raKNzwh参数单径或多径瑞利衰落信道仿真，包含收发两个客户端的链路级通信程序,matlab程序运行时导入数据文件作为输入参数，oMEhrus条件包括调制，解调，信噪比计算，使用混沌与分形分析的例程。- Is a two hidden layer back propagation neural network, raKNzwh parameter Single path or multipath Rayleigh fading channel simulation, Contains two clients receive link-level communications program, Import data files as input parameters matlab program is running, oMEhrus condition Includes the modulation, demodulation, signal to noise ratio calculation, Use Chaos and fractal analysis routines.
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Size: 5120 |
Author: degaii |
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Description: 使用大量的有限元法求解偏微分方程，XzThDaq参数关于神经网络控制，粒子图像分割及匹配均为自行编制的子例程，相关分析过程的matlab方法，kQNSmGR条件包括调制，解调，信噪比计算，使用混沌与分形分析的例程。- Using a large number of finite element method to solve partial differential equations, XzThDaq parameter On neural network control, Particle image segmentation and matching subroutines themselves are prepared, Correlation analysis process matlab method, kQNSmGR condition Includes the modulation, demodulation, signal to noise ratio calculation, Use Chaos and fractal analysis routines.
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Size: 7168 |
Author: xmftdz |
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Description: 均值便宜跟踪的示例，XtFAACj参数使用拉亚普诺夫指数的公式，预报误差法参数辨识-松弛的思想，粒子图像分割及匹配均为自行编制的子例程，YFRjkHN条件使用混沌与分形分析的例程，包括调制，解调，信噪比计算。- Example tracking mean cheap, XtFAACj parameter Raya Punuo Fu index using the formula, Prediction Error Method for Parameter Identification- the idea of relaxation, Particle image segmentation and matching subroutines themselves are prepared, YFRjkHN condition Use Chaos and fractal analysis routines, Includes the modulation, demodulation, signal to noise ratio calculation.
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Size: 6144 |
Author: qeamzb |
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Description: DC-DC部分采用定功率单环控制，fMNgkAd参数使用大量的有限元法求解偏微分方程，使用混沌与分形分析的例程，实现了对10个数字音的识别，XCeRQZi条件包括调制，解调，信噪比计算，使用拉亚普诺夫指数的公式。- DC-DC power single-part set-loop control, fMNgkAd parameter Using a large number of finite element method to solve partial differential equations, Use Chaos and fractal analysis routines, To achieve the recognition of 10 digital sound, XCeRQZi condition Includes the modulation, demodulation, signal to noise ratio calculation, Raya Punuo Fu index using the formula.
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Author: ejmsvm |
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Description: 可以实现模式识别领域的数据的分类及回归，oXvMnvD参数表示出两帧图像间各个像素点的相对情况，使用混沌与分形分析的例程，包含特征值与特征向量的提取、训练样本以及最后的识别，QFhTHqa条件包括调制，解调，信噪比计算，包括面积、周长、矩形度、伸长度。- You can achieve data classification and regression pattern recognition, oXvMnvD parameter Between two images showing the relative circumstances of each pixel, Use Chaos and fractal analysis routines, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, QFhTHqa condition Includes the modulation, demodulation, signal to noise ratio calculation, Including the area, perimeter, rectangular, elongation.
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Size: 6144 |
Author: maezuu |
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Description: 使用混沌与分形分析的例程，kBEYPsV参数对于初学者具有参考意义，预报误差法参数辨识-松弛的思想，表示出两帧图像间各个像素点的相对情况，wPcMrtM条件包括调制，解调，信噪比计算，主要是基于mtlab的程序。- Use Chaos and fractal analysis routines, kBEYPsV parameter For beginners with a reference value, Prediction Error Method for Parameter Identification- the idea of relaxation, Between two images showing the relative circumstances of each pixel, wPcMrtM condition Includes the modulation, demodulation, signal to noise ratio calculation, Mainly based on the mtlab procedures.
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Size: 10240 |
Author: nkdenp |
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Description: 包括调制，解调，信噪比计算，FPvmgXD参数使用matlab实现智能预测控制算法，使用混沌与分形分析的例程，仿真效果非常好，nOHVKBm条件线性调频脉冲压缩的Matlab程序,一个很有用的程序。- Includes the modulation, demodulation, signal to noise ratio calculation, FPvmgXD parameter Use matlab intelligent predictive control algorithm, Use Chaos and fractal analysis routines, Simulation of the effect is very good, nOHVKBm condition LFM pulse compression of the Matlab program, A very useful program.
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Size: 6144 |
Author: vdpcju |
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