一种宽间隔混沌跳频序列快速生成方法

发布时间：2018-01-13 20:23

本文关键词：一种宽间隔混沌跳频序列快速生成方法　出处：《重庆邮电大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：针对比特抽取法在产生混沌跳频序列时实时性不佳的问题,提出一种基于分段迭代的混沌跳频序列生成算法。将分段迭代产生的混沌映射轨道实值点表示成二进制小数,采用周期多比特重叠抽取和非线性矩阵变换相结合的方法以及改进的随机平移替代法生成宽间隔序列。仿真结果表明,在平衡性、汉明相关性、跳频间隔及抗预测能力等跳频序列性能不低于现有算法的前提下,其平均迭代次数可减少约45%,且在实时性、存储空间占用量和扩展序列周期方面具备优势。经验证,该算法适用于要求灵活更换跳频图谱的无线跳频通信系统。
[Abstract]:Aiming at the problem of poor real-time bit extraction method in generating chaotic FH sequences, proposed a chaotic frequency hopping sequence generation algorithm based on iterative segmentation calculation. Will produce segment iterative chaotic map real point track expressed as a binary number, using the method of random shift cycle multi bit overlap extraction and nonlinear matrix transform and the improved alternative method to generate wide interval sequence. The simulation results show that the Hamming correlation in balance, and the frequency interval prediction ability and anti sequence performance than the existing algorithms under the premise, the average number of iterations can be reduced by about 45%, and in real time, with the advantages of the storage space of periodic quantity and extended sequences. After verification wireless frequency hopping communication system, the algorithm is suitable for the requirements of flexible replacement frequency hopping maps.

【作者单位】：哈尔滨工业大学电子与信息工程学院;哈尔滨工业大学(威海)信息与电气工程学院;
【基金】：通信网信息传输与分发技术重点实验室基金~~
【分类号】：TN914.41
【正文快照】： 2.哈尔滨工业大学(威海)信息与电气工程学院,山东威海264209)0引言跳频保密通信对于抵抗恶意侦测干扰及截获等方面具有明显优势。但随着计算机运算速度的提高,混沌预测算法的改进[1],信号处理新理论和新技术的发展[2]以及云计算技术的出现[3],跳频规律被破译的可能性增加,便携

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