摘要
正交多相码信号有低自相关旁瓣值和低互相关峰值的特点,可以用于编队工作的主动声纳中,降低声纳之间的直达波干扰。文章提出用禁忌搜索的方法设计正交多相码信号集,优化正交多相码的自相关旁瓣值和互相关峰值。通过对实验结果的分析和多种算法之间的比较,证明了禁忌搜索算法能够设计相关性能更优的正交多相码。文章还通过数值实验,分析了正交多相码信号集的相关性能与信号数量和码长的关系。
Orthogonal polyphase codes with low auto-correlation sidelobe peak （ASP） values and cross-correlation peak （CP） values, can be used in active sonar systems in fleet formation to reduce the direct path interference between different sonar systems. A Tabu Search （TS） algorithm is applied to design orthogonal polyphase codes to optimize the ASP and CP values of the codes. It is proved that the TS algorithm can design orthogonal polyphase codes with good correlation properties by applying analyses of the results and comparisons of different algorithms. The correlation between the correlation properties and the length and the number of orthogonal polyphase codes is obtained.
出处
《应用声学》
CSCD
北大核心
2012年第3期209-214,共6页
Journal of Applied Acoustics
关键词
主动声纳
直达波干扰
正交多相码
禁忌搜索
Active sonar, Direct path interference, Orthogonal Polyphase code, Tabu Search
