• In order to expand the group of ades on communication system with asynchronous code division multiaddress (CDMA), the possibility of using chaotic spreading sequences was researched.

    为了增加异步码分多址通信系统可用研究了在该系统中使用混沌扩频序列可能性

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  • As is known it is difficult to design good FH code and synchronize the transmitter and receiver in a chaotic FH communication system.

    众所周知设计好的混沌跳频通信系统中实现收发双方同步很困难的。

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  • Based on the deterministic characterization of chaotic FH code construction and nonlinear dynamics of chaotic FH code, nonlinear adaptive predictive countermeasure method is proposed to interfere.

    基于混沌序列构造固有确定性非线性等特点,提出对抗混沌跳频通信的非线性自适应预测对抗的新概念。

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  • A random unlikeness chaotic sequence is created with random function. Mirror image transforms with this chaotic sequence, then the information is transformed to secret-code files by this sequence.

    首先由随机函数生成得到任意的不相等混沌序列,以此序列作镜像变换信息进行置换而得到加密文件。

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  • This paper brings forward a text embedding digital watermarking method based on image's DWT domain, meanwhile, using the chaotic sequences to encrypt the text data and BCH code to correct them.

    提出种在图像小波域中嵌入文字的新型鲁棒水印算法嵌入文字进行混沌加密BCH纠错编码。

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  • Two new methods are developed for blind estimation for long-code chaotic spread spectrum sequence.

    针对长码实值混沌扩系统,提出了解扩算法。

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  • Most software development is a chaotic activity, often characterized by the phrase "code and fix".

    大多数软体开发一个混乱的开始,常常一句话代以概括”撰写!

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  • A new method of blind estimation for short-code chaotic spread spectrum sequence is proposed, which is based on principal component analysis (PCA) and has good performance at low SNR condition.

    针对短码实值混沌系统,提出基于分析算法,实现信噪比对直扩序列估计

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  • The characteristics of the chaotic system, such as well pseudorandom, long inscrutability, high sensibility to the initial value, make it be applied in the code field.

    混沌系统具有良好伪随机性长期不可预测性初始高度敏感性特性这就决定了混沌系统可以应用于密码学领域。

    youdao

  • The characteristics of the chaotic system, such as well pseudorandom, long inscrutability, high sensibility to the initial value, make it be applied in the code field.

    混沌系统具有良好伪随机性长期不可预测性初始高度敏感性特性这就决定了混沌系统可以应用于密码学领域。

    youdao

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