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中文摘要：
由于MIMO雷达发射相互正交的信号,所以设计具有低自相关旁瓣和低互相关的正交信号是MIMO雷达实现的关键问题之一。首先以自相关峰值旁瓣平方、互相关峰值平方及自相关和互相关能量为代价函数,应用遗传算法和贪心算法的混合优化算法来搜索正交多相码,分别进行了4相位和32相位的多相码设计;其次放宽自相关主瓣宽度,并设计了32相位的正交多相码;最后进行了随机相位正交多相码设计。仿真实验表明了以上各种设计的有效性和可行性。
英文摘要：
MIMO（Multiple Input Multiple Output） radar transmits orthogonal signals,so the design of low autocorrelation sidelobe and cross-correlation is one of the key techniques of MIMO radar systems.Firstly,the cost function is chosen as the square of autocorrelation peak sidelobe,the square of cross-correlation peak,autocorrelation and cross-correlation energy.A novel hybrid algorithm,combined genetic algorithm and greedy algorithm optimization,is then proposed to search orthogonal polyphase code and applied to design 4 phases and 32 phases for orthogonal polyphase code.After that,32 phases of orthogonal ployphase is designed by relaxing the main-lobe width of its autocorrelation.Finally,the design of random phases orthogonal polyphase code is presented.Simulation results show that all designs are effective and feasible.
同期刊论文项目
同项目期刊论文
Optimal Waveform Design for Generalized Likelihood Ratio and Adaptive Matched Filter Detectors Using
Design of Oversampled Double-Prototype DFT Modulated Filter Banks via Bi-iterative Second-order Cone
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