基于耦合映象格子的宽间隔FH序列及其性能分析

Wide-Gap Frequency Hopping Sequences Based on Coupled Map Lattice and Its Performance Analysis

为实时产生宽间隔跳频序列，提出了一种基于Tent映射的双向耦合映象格子的宽间隔跳频序列的产生方法。该方法采用了多比特量化和比特抽取相结合的量化方法和改进的平移替代法进行宽间隔处理。所提方法可实时、高效地产生跳频序列，具有结构简单、运算复杂度低、对存储空间要求低等优点。仿真结果表明，所产生的宽间隔跳频序列服从均匀分布，具有宽的跳频间隔、良好的汉明相关性和复杂的相空间分布。

To generate wide-gap frequency hopping （FH） sequences in real-time, a generator based on Tent Double-way Coupled Map Lattice is presented. A quantization algorithm, combing multi-bit quantization and reshaping operation, and a modified shift replace algorithm are used to wide the FH sequences. Compared with other generators, the presented generator has several advantages including simple structure, low complexity of algorithm, and low requirement to the memory space. Simulation results show that the wide-gap FH sequences obey the uniform distribution with wide hopping gap, good hamming correlation property and complicated phase space.