Costas序列在多用户雷达系统中的应用研究  

Application study of Costas arrays in multiuser radar systems

作　　者：姚建国[1] 黄清[2] 

机构地区：[1]南京邮电大学江苏省无线通信重点实验室,江苏南京210003 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《通信学报》2010年第5期60-72,共13页Journal on Communications

基　　金：南京邮电大学科研基金资助项目(NY207133)~~

摘　　要：讨论了跳频码的构造与性能,着重介绍了Costas序列的结构,用Costas序列设计跳频码能获得理想的自模糊和较好的互模糊性能。建立了跳频扩频信号的数学模型,给出了子脉冲正交的条件。论述了Costas序列的自(互)相关特性,给出了置换序列互相关函数的实用性质及模糊函数的求取算法,并进行了性能仿真,研究了Costas序列互模糊函数的特性,阐述了多用户系统中减小用户间相互干扰的方法。The construction and performance of frequency hopping codes were discussed but the emphasis was laid on the construction of Costas arrays.The frequency hopping codes called Costas arrays could be designed to have almost ideal auto-ambiguity and good cross-ambiguity.A mathematical model was established for frequency hop coded waveforms and the conditions for orthogonal sub-pulse were given.The auto-and cross-correlation properties of Costas arrays were illuminated,the practical properties of cross-correlation function of permutation matrices were revealed,the algorithms for computing ambiguity function were presented and the simulation results were demonstrated.After a study of the cross-ambiguity properties of Costas arrays the ways were suggested to reduce interference in a multiuser radar system.

关 键 词：COSTAS序列 互相关函数 模糊函数 跳频扩频 本原元 正交 

分 类 号：TN957.51[电子电信—信号与信息处理]