Design of orthogonal code sets with ideal correlation properties is crucial for orthogonalMultiple Input Multiple Output(MIMO)radar.A modified Genetic Algorithm(GA)is proposed tonumerically design orthogonal Discrete ...Design of orthogonal code sets with ideal correlation properties is crucial for orthogonalMultiple Input Multiple Output(MIMO)radar.A modified Genetic Algorithm(GA)is proposed tonumerically design orthogonal Discrete Frequency-Coding Waveforms(DFCWs)with good correlationproperties for MIMO radar.Some of the designed results are presented,and their correlation propertiesare better than those presented in literatures.The effect of Doppler frequency shift on the performanceof these signals is simply investigated.Simulation results and comparisons show that the proposedalgorithm is more effective for the design of DFCWs with superior aperiodic correlation properties.展开更多
离散频率编码波形是一类常用的多输入多输出雷达波形,加入线性调频能够改善其自相关性能。将基于遗传算法和模拟退火的混合算法用于离散频率编码线性调频(discrete frequency coding waveform-linear frequency modulation,DFCW-LFM)波...离散频率编码波形是一类常用的多输入多输出雷达波形,加入线性调频能够改善其自相关性能。将基于遗传算法和模拟退火的混合算法用于离散频率编码线性调频(discrete frequency coding waveform-linear frequency modulation,DFCW-LFM)波形的优化设计,仿真结果表明,用该优化算法得到的信号其相关性能要优于现有方法。另外,提出了一种改进的DFCW-LFM波形设计方法。该方法在DFCW-LFM波形的基础上,对频率编码子脉冲同时进行相位编码,构成DFCW-LFM和相位编码的混合波形,并采用混合算法对其进行优化设计。仿真结果表明,和已有的DFCW-LFM波形相比,所设计混合波形的相关性能得到了进一步改善。展开更多
基金the National Natural Science Foundation of China(No.60672044).
文摘Design of orthogonal code sets with ideal correlation properties is crucial for orthogonalMultiple Input Multiple Output(MIMO)radar.A modified Genetic Algorithm(GA)is proposed tonumerically design orthogonal Discrete Frequency-Coding Waveforms(DFCWs)with good correlationproperties for MIMO radar.Some of the designed results are presented,and their correlation propertiesare better than those presented in literatures.The effect of Doppler frequency shift on the performanceof these signals is simply investigated.Simulation results and comparisons show that the proposedalgorithm is more effective for the design of DFCWs with superior aperiodic correlation properties.
文摘离散频率编码波形是一类常用的多输入多输出雷达波形,加入线性调频能够改善其自相关性能。将基于遗传算法和模拟退火的混合算法用于离散频率编码线性调频(discrete frequency coding waveform-linear frequency modulation,DFCW-LFM)波形的优化设计,仿真结果表明,用该优化算法得到的信号其相关性能要优于现有方法。另外,提出了一种改进的DFCW-LFM波形设计方法。该方法在DFCW-LFM波形的基础上,对频率编码子脉冲同时进行相位编码,构成DFCW-LFM和相位编码的混合波形,并采用混合算法对其进行优化设计。仿真结果表明,和已有的DFCW-LFM波形相比,所设计混合波形的相关性能得到了进一步改善。