摘要
在破译能力研究中,跳频序列用于控制载波频率随时间的变化规律,性能对跳频系统的性能有重大影响。跳频序列设计的技术难点在于所设计的序列必须有足够的抗干扰能力,同时需要有良好的序列相关性能。通常的方法是基于m序列构造跳频序列族有明显缺陷。为了提高抗干扰破译和组网能力,提出新的基于RS码来构造跳频序列族的方法提高了序列的复杂性,增强了抗干扰能力和组网能力。并依照序列的汉明相关准则,利用MATLAB软件对新方法产生的序列性能进行了仿真分析,验证了方法的正确性、可行性和优越性。
Families of frequency hopping sequences are used to specify which frequency will be used for transmission at any given time,and their properties play important roles in FHMA systems. The difficulty of the design is the designed sequences must have excellent anti-jamming capability and correlation properties. The usual method of past is producing families of FH sequences based on m-sequences. The method has obvious defect. The paper proposes a new method that produces families of FH sequences based on RS codes. The new method increases the complexity of these sequences and raises anti-jamming capability and network capacity. According to the hamming correlation criteria,the paper simulates the properties of those sequences by MATLAB and verifies theirs reliability,feasibility and superiority.
出处
《计算机仿真》
CSCD
北大核心
2010年第9期346-350,共5页
Computer Simulation
关键词
跳频序列
跳频图案
汉明相关
FH sequences
FH pattern
Hamming correlation
