局域零相关多相码设计  

Design of Local Area Zero Correlation Zone Polyphase Code

作　　者：刘志国[1] 王亚利[2] 

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068 [2]空军工程大学理学院,陕西西安710051

出　　处：《雷达科学与技术》2015年第3期310-313,共4页Radar Science and Technology

摘　　要：针对已有波形设计方法其旁瓣峰值经常出现在主瓣附近,而实际应用中目标回波可能跨越多个距离单元的情况,给出发射信号的自相关和互相关在主瓣附近具有零相关区域的两种波形方法。一种是基于遗传算法的类零相关多相码设计方法,该方法适用于离散相位的多相码设计;另一种是采用循环算法的设计方法,该方法适用于连续相位的多相码设计。两种方法都可以使主瓣附近一定区域内具有较低的旁瓣峰值。最后计算机仿真验证了两种方法的有效性。High range resolution MIMO radar transmits orthogonal signals. It needs very low sidelobes which are close to the mainlobe because a target may span several range bins. A genetic algorithm and a cyclic algorithm based zero correlation zone polyphase code design method are proposed. The genetic algorithm is suitable for the design of discrete phase code, while the cyclic algorithm is suitable for the design of contin- uous phase code. Both methods can offer very low sidelobes in the local area near the mainlobe. Finally, the validities of the two algorithms are proved by computer simulations.

关 键 词：MIMO雷达 正交多项码 遗传算法(GA) 循环算法(CA) 

分 类 号：TN957.51[电子电信—信号与信息处理]