摘要
正交信号设计是MIMO背景下的雷达信号产生的关键技术之一,为了降低正交多相码设计的复杂度,提高雷达的相关性能,本文采用了一种基于遗传算法的正交多相码设计方法。该方法利用Hadamard矩阵的严格正交性,首先构造一类Hadamard矩阵,从中选取初始码序列;然后把"和函数"作为代价函数,采用遗传算法求解出近似最优的信号组。整个实验通过MATLAB仿真实现。仿真结果表明,该方法在保证低自相关旁瓣量和低互相关量的同时,能够保证设计出的信号符合严格正交性。
The orthogonal signal design is one of the key technologies in the radar signal generation technology under the background of MIMO.In order to reduce the complexity of design and improve the performance of radar,a new method based on genetic algorithm is adopted.The method utilizes the strict orthogonality of Hadamard matrix.Firstly,a kind of Hadamard matrix is constructed,and the initial code sequence is selected.Then,the＂and signal＂is used as the cost function,and the genetic algorithm is used to solve the approximate optimal signal set.The algorithm is implemented by Matlab.The simulation results show that the method can ensure the low autocorrelation sidelobe and low cross-correlation sidelobe,at the same time,it can ensure the signal designed to meet the strict orthogonality.
出处
《国外电子测量技术》
2017年第2期34-36,48,共4页
Foreign Electronic Measurement Technology
