摘要
针对线性调频类超宽带雷达信号的线性时频特性,提出了基于2阶统计量——信号模糊函数的线性调频类超宽带雷达信号波达方向估计算法,通过分析仿真证明该方法优于传统方法。根据分析指出循环平稳算法与模糊函数算法之间的关系,介绍了循环平稳算法对基于窄脉冲形式的无载波超宽带雷达信号DOA估计的有效性。系统完整地论述了超宽带雷达信号DOA估计算法。
Accordering to the linear time frequency feature of linear frequency modulation （LFM） ultra wideband （UWB） radar signals, a direction of arrival （DOA） estimation algorithm based on the ambiguity function is proposed. It is proved that the new approach is better than conventional wideband algorithms by theoretic analysis and computer simulation. Moreover, the relationship between cyclostationary algorithms and the new algorithm is also derived. Finally, how to use cyclostationary algorithms to estimate impulse UWB radar signal DOA＇s is introduced.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2007年第12期2034-2038,2139,共6页
Systems Engineering and Electronics
基金
全国高等学校优秀青年教师教学科研奖励计划资助课题
关键词
线性调频
超宽带雷达信号
模糊函数
波达方向估计
linear frequency modulation
ultra wideband radar signal
ambiguity function
direction of-arrival estimation
