摘要
为了提高噪声信号的有效性和可控性,设计了一种基于Tent映射的双向耦合映象格子(TDCML)的混沌噪声信号产生器,采用"舍弃法"生成不变分布可为任意分布的混沌序列,分别基于时间间隔和空间间隔给出了混沌噪声信号产生器的两种设计方案,并讨论了其FPGA实现方法。与传统的多路并行映射设计方案相比,所提方案具有结构简单、占用硬件资源少和易于实现等优点。计算机仿真结果表明,所设计的混沌噪声信号产生器可产生具有平坦功率谱和任意分布的混沌噪声信号,应用领域广阔。
To improve the effectivity and controllability of noise signal, a generator of chaotic noise signal based on tent double-way coupled map lattice （TDCML） is proposed. The chaos sequence with arbitrary distribution can be generated using rejection method. Two designe schemes based on time interval and space interval are shown and realized on FPGA. Comparing with the traditonal design of multi-parallel-map, the proposed schemes have several advantages, such as simple stucture,low resource cost and easy realiazation. The computer simulation results show that, the proposed generator can generate chaos jamming signal with flat power spectrum and arbitrary distribution. Therefore, the designed generator has wide applications.
出处
《电子测试》
2011年第7期81-85,共5页
Electronic Test
关键词
混沌
噪声
耦合映象格子
不变分布
chaos
noise
coupled map lattice
invariant distribution
