摘要
多输入多输出(MIMO,Multiple-Input Multiple Output)雷达系统采用多天线方式,利用发射信号之间的正交性提高系统性能,但传统的单码序列之间不能满足完全正交(自相关和互相关旁瓣全为0)的特性,影响了系统性能.针对上述问题,结合完全互补序列的特点,推导了完全互补序列模糊函数的数学表达式,进行了相应的计算机仿真,仿真结果充分验证了模糊函数的有效性;并对基于完全互补序列的雷达速度分辨率进行了分析.另外,研究了完全互补序列在MIMO雷达中的应用问题,并建立基于完全互补序列的MIMO雷达信号模型,结果表明:完全互补序列在MIMO雷达中具有很好的应用前景,同时验证了完全互补序列在MIMO雷达应用中的合理性和正确性.
MIMO（multiple-input multiple-output）radar can effectively improve radar performance by transmitting orthogonal signals.While the conventional single sequence can not keep the complete orthogonality（the sidelobes of the auto-correlation and cross-correlation function equal to zero at all delays）.In the context of the problem,in conjunction with the property of the complete complementary sequence,the ambiguity function of complete complementary sequence was derived.The results of the computer simulations show that the validity of the proposed ambiguity function.The radar velocity resolution based on complete complementary sequence was also analyzed.The application of complete complementary sequence in MIMO radar was studied and the MIMO radar signal model based on complementary sequence was established.It is demonstrated that the complete complementary sequence has the potential to significantly improve the MIMO radar performance significantly.And the rationality and validity of the complete complementary sequence applied in MIMO radar are proved.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2010年第5期564-569,共6页
Journal of Beijing University of Aeronautics and Astronautics
基金
航空科学基金资助项目(20060151006)
教育部"新世纪优秀人才"支持计划项目(NCET-06-0166)
关键词
完全互补序列
MIMO雷达
模糊函数
complete complementary sequence
MIMO（multiple-input multiple output） radar
ambiguity function
