Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (1): 57-61.

• 传感器与信号处理 • 上一篇    下一篇

SIAR体制单基地MIMO雷达分辨率分析及距离高分辨技术

赵光辉, 陈伯孝, 杨雪亚   

  1. (西安电子科技大学雷达信号处理重点实验室, 陕西 西安 710071)
  • 出版日期:2010-01-23 发布日期:2010-01-03

Analysis of angle resolution for monostatic MIMO radar based on SIAR and super resolution in distance measurement

ZHAO Guang-hui, CHEN Bai-xiao, YANG Xue-ya   

  1. (National Lab of Radar Signal Processing, Xidian Univ., Xi’an 710071, China)
  • Online:2010-01-23 Published:2010-01-03

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。

Abstract:

The monostatic MIMO radar based on SIAR emits the orthogonal signals of multi-carrier-frequency,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.