对该混沌序列进行了随机性测试。
混沌序列是完全可以预测的。
提出了一种新的混沌序列扩频水印算法。
A new chaos-based spread spectrum watermarking algorithm is developed in the wavelet domain for still images.
本文集中讨论了三种混沌序列的产生方法。
This paper focuses on the discussion of three methods of generating digital chaotic sequences.
研究了离散时间动态系统混沌序列的统计特性。
This paper analysed the statistic property of chaotic sequence generated by a widely studied discrete time dynamic system, Logistic_Map.
提出了一种基于一维混沌序列的混沌雷达波形。
This paper presents one certain chaotic radar waveforms based on one-dimensional chaotic sequences.
该二值序列可以用一个混沌初始值,即混沌序列密钥来生成。
然后,文中又讨论了一种产生混沌序列的改进方法和级联序列的思想。
Then, an improved method of generating chaotic sequence and the iden of serial sequence are talked.
混沌序列具有容易生成、对初始条件敏感以及具有白噪声的统计特性。
The chaotic sequence has easy to produce, is sensitive to the initial condition as well as has the statistical property of the white noise.
重构合适的相空间,使空间轨道充分展开是进一步混沌序列预测的前提。
Reconstructing proper ph ase space to spread space orbit completely is the precondition of further chaotic series forecasting.
采用二维离散混沌模型,研究了从混沌序列到加密因子序列的映射方法。
Mapping method about chaotic sequence is researched to encryption factor sequence using two-dimensional discrete chaotic model.
理论分析表明,该混沌序列具有较理想的A -CD MA扩频码性能。
The theoretical analysis shows that the chaotic sequences serve as spreading codes for A-CDMA.
基于混沌序列重构相空间理论,提出一种改进的局部平均非线性去噪方法。
Based on the chaotic theory of reconstructing phase space, an improved local average nonlinear noise reduction method is presented.
借助计算机对混沌序列进行数值分析必须考虑计算机的存储字长有限这个条件。
To analyse the chaotic time sequences by computer should consider the finite word length of the computer.
文中首先对线性移位寄存器序列和混沌序列做了阐述,并对其主要性能做了计算。
At first, this thesis expounds linear-shift-register sequence and chaotic sequence, and calculates the value of their main properties.
对于一个经诊断为混沌的统计量序列,应用神经网络建立模型,短期预测混沌序列。
Short term predictions of chaotic series are realised with neural network model, after diagnosing the time series as chaotic statistic series.
利用混沌系统的特点调制了两种不同的混沌序列,分别用于水印加密和子图像的抽取。
Two chaotic sequences are modulated according characters of chaotic system, using for watermark encryption and sub image extraction.
最后,对数字混沌序列驱动的宽带混沌信号在雷达系统中的应用作了初步的系统设计。
Finally, the basic design of radar system using the wideband chaotic signal is carried out.
基于混沌序列的多峰函数微粒群寻优算法的目标就是找到多峰函数的所有局部优化峰值。
It makes a searching for all local optimization of the multimodal function that a PSO algorithm based on chaos sequence for multi-modal function optimization.
用非线性随机信号分析方法研究了混沌序列的量化误差和扩散误差引起的有限精度效应。
By using nonlinear random signal analyzing technique, the chaotic finite precision effect due to quantifying error and diffusing error is studied.
利用参数扰动产生的有限精度混沌序列产生加密矩阵和置乱矩阵,对灰度图像进行加密。
Encryption matrixes and replacement matrixes are being generated by using the chaotic mapping via parameter perturbation, and then the gray-scale image is encrypted.
该方法利用混沌序列具有容易生成、对初始条件敏感,以及具有白噪声的统计特性等特点。
This method makes use of good properties of chaotic sequences, such as ease of generation, sensitive dependence on their initial condition and noise like statistic characteristics.
如果混沌序列某一比特位为0,则将对应的加密水印信息嵌入到待嵌入图像信息的最低比特位。
When a bit in chao sequences is equal to 0, hiding watermark information of the corresponding bit is embedded into Least Significant Bite.
基于混沌的视频信息隐藏算法,利用混沌序列的类随机性对嵌入信息进行置乱,以提高保密性。
The video information hiding algorithm based on chaos USES the analogy randomicity of chaos sequence to disturb the hiding information, which improves the secrecy.
针对现有基于混沌序列的图像加密算法的缺陷,提出一种基于不放回抽样的图像混沌加密算法。
Aiming at defects which are exiting in image encryption algorithm based on chaotic sequences, this paper proposes an image chaotic encryption algorithm based on sampling without replacement.
给出了基于序列顺序置乱的信号白化算法:混沌序列乱序白化算法和伪随机序列乱序白化算法。
Present a whitening signal algorithm based on disordering sequence. One bases on chaos sequence, another bases on pseudo random sequence.
基于对混沌信号分析方法的研究,利用混沌序列固有的确定性,我们提出了一种预测干扰的方法。
Based on the analysis and the deterministic characterization of chaotic signals, we propose a interference method by constructing a nonlinear predictive model.
本文介绍了电子对抗中对混沌时间序列进行预测的一种数学模型和一种基于混沌序列的反侦察系统。
In this paper, the prediction of mathematical model for chaotic sequence in electronic antagonism and the anti-reconnaissance based on chaotic sequence are presented.
该方法在一定的量化标准下利用小渡变换提取图象的特征信息,通过混沌序列对其加密生成数字水印。
In this method, the original image 's feature is extracted by using wavelet transform and quantization. The feature information is changed into watermark by the chaotic sequence encryption.
利用混合光学双稳混沌序列的伪随机性和初值敏感性,提出一种用于数字水印中的水印图像置乱算法。
Using the sensitivity to the initial conditions and parameters of mixed-optical bistable chaotic sequence, we have a new scrambling algorithm about watermarking image.
应用推荐