| 一种混沌差分跳频序列的产生及性能分析 |
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| 引用本文： | 张硕,张炜,高凯. 一种混沌差分跳频序列的产生及性能分析[J]. 电子工程师, 2010, 36(2): 16-18 |
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| 作者姓名： | 张硕 张炜 高凯 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南省长沙市,410073 |
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| 摘 要： | 当采用数字器件来产生混沌序列时，由于数字器件必然会对混沌映射的参数精度有所限制，从而影响混沌序列的线性复杂度。混沌映射跳频序列的平衡性和汉明相关性等都会恶化，导致不适合于跳频系统。针对一种Logistic映射的良好随机性，为了减小有限精度效应，提出利用m序列扰动混沌映射产生差分跳频码的方法。实验结果表明文中提出的混沌差分跳频G函数算法与映射引入m序列扰动之前相比具有更良好的随机性和均匀性，具有很好的参考价值。
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| 关 键 词： | 差分跳频序列 混沌 m序列扰动 |
A Method to Generate Chaotic DFH Sequence and Its Performance Analysis |
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| ZHANG Shuo,ZHANG Wei,GAO Kai. A Method to Generate Chaotic DFH Sequence and Its Performance Analysis[J]. Electronic Engineer, 2010, 36(2): 16-18 |
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| Authors: | ZHANG Shuo ZHANG Wei GAO Kai |
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| Affiliation: | School of Electronic Science and Engineering;National University of Defense Technology;Changsha 410073;China |
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| Abstract: | When chaotic sequence is generated by digital system,the parameter precision of chaotic mapping is restricted,which affects linearity,complexity of chaotic sequence.Balance properties and Hamming correlation property of DFH sequence mapped by chaos deteriorate which leads to system not adapting to FH system.Due to good randomicity of one kind of Logistic mapping and to reduce the limited-precision effect,an approach to generate DFH code via chaotic mapping which is perturbed by m-sequences is proposed.Simul... |
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| Keywords: | DFH-sequences Chaos m-sequences perturbation |
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