基于稀疏矩阵和相关函数联合优化的MIMO-OFDM线性调频波形复用设计与实现方法

王文钦 程胜娟 邵怀宗

王文钦, 程胜娟, 邵怀宗. 基于稀疏矩阵和相关函数联合优化的MIMO-OFDM线性调频波形复用设计与实现方法[J]. 雷达学报, 2015, 4(1): 1-10. doi: 10.12000/JR14148
引用本文: 王文钦, 程胜娟, 邵怀宗. 基于稀疏矩阵和相关函数联合优化的MIMO-OFDM线性调频波形复用设计与实现方法[J]. 雷达学报, 2015, 4(1): 1-10. doi: 10.12000/JR14148
Wang Wen-qin, Cheng Sheng-juan, Shao Huai-zong. MIMO-OFDM Chirp Waveform Diversity Design and Implementation Based on Sparse Matrix and Correlation Optimization[J]. Journal of Radars, 2015, 4(1): 1-10. doi: 10.12000/JR14148
Citation: Wang Wen-qin, Cheng Sheng-juan, Shao Huai-zong. MIMO-OFDM Chirp Waveform Diversity Design and Implementation Based on Sparse Matrix and Correlation Optimization[J]. Journal of Radars, 2015, 4(1): 1-10. doi: 10.12000/JR14148

基于稀疏矩阵和相关函数联合优化的MIMO-OFDM线性调频波形复用设计与实现方法

doi: 10.12000/JR14148
基金项目: 

国家自然科学基金(41101317),新世纪优秀人才计划(NCET-12-0095)和四川省杰出青年基金(2013JQ003)资助课题

详细信息
    作者简介:

    王文钦(1979-),男,博士,研究员,博士生导师,主要从事通信和雷达信号处理方面的研究。E-mail:wqwang@uestc.edu.cn 程胜娟(1989-),女,硕士研究生,主要从事MIMOSAR波形设计与实现研究。 邵怀宗(1969-),男,博士,副教授,主要从事现代信号处理研究。

MIMO-OFDM Chirp Waveform Diversity Design and Implementation Based on Sparse Matrix and Correlation Optimization

  • 摘要: 多输入多输出合成孔径雷达(Multiple-Input Multiple-Output Synthetic Aperture Radar, MIMO SAR)发射信号应该具有大时间带宽积和良好的模糊函数特性。该文联合优化稀疏矩阵和相关函数来设计多路正交的MIMO SAR 正交频分复用线性调频(OFDM chirp)信号,首先将MIMO SAR波形设计转化为跳频频率与跳频幅度的联合设计,并提出以最小化稀疏矩阵块相关系数及信号互相关峰值和为约束条件,采用迭代搜索法求解最佳编码矩阵;并以最小化信号自相关旁瓣峰值与互相关峰值之和为约束条件,采用遗传算法确定最佳幅度矩阵;最后采用组合优化搜索法设计出最佳信号。文中还分析了发射阵元数目、跳频总间隔数及总频率选择数与信号性能之间的关系。仿真结果表明此方法可以设计多路正交大时间带宽积OFDM chirp信号,同时降低信号的互相关峰值与自相关旁瓣峰值、提高互模糊性能。

     

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出版历程
  • 收稿日期:  2014-12-04
  • 修回日期:  2015-02-04
  • 网络出版日期:  2015-02-28

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