摘要
针对单基地MIMO雷达收发天线稀布且不共用的特点,详细研究了发射采用多载频正交信号情况下的四维模糊函数,并给出了阵列稀布时方位、俯仰二维角度的3 dB波束宽度公式。考虑到采样过程中距离维存在量化误差,将超分辨思想引入到距离测量中,给出了距离超分辨的详细过程。理论推导与仿真结果证实了该方法的有效性。
The monostatic MIMO radar based on SIAR emits the orthogonal signals of multi-carrier-irequency,and the transmit and receive antennas are located sparsely. An introduction to the four-dimensional ambiguity function of the transmitted signals is given, and based on which the 3 dB beamwidths of the azimuth and elevation are analyzed, respectively. Considering that there are quantification errors in distance-dimension, the idea of super resolution is introduced to distance measuring and the procedure of super resolution is elaborated. Results of computer simulation demonstrate the validity of the new algorithm.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2010年第1期57-61,66,共6页
Systems Engineering and Electronics
基金
国家自然科学基金(60772068)
国家预研项目(51307050201)
教育部"新世纪优秀人才支持计划"(NCET-06-0856)资助课题
关键词
单基地MIMO雷达
距离超分辨
四维模糊函数
monostatic MIMO radar
distance super resolution
four-dimensional ambiguity function
