Digital beam forming methods for variable polarimetric monopulse radar

IET Radar, Sonar & Navigation

Houjun Sun¹  Zhangfeng Li²  Pei Zheng³  Yi Zhang⁴ 

[1] Beijing Key Laboratory of Millimeter Wave and Terahertz Techniques School of Information and Electrical Beijing Institute of Technology Beijing China;Institute of Second Academy of China Aerospace Science and Industry Corporation Beijing China;National Key Laboratory of Science and Technology on Test Physics and Numerical Mathematics Beijing China;School of Physics Beijing Institute of Technology Beijing China;

关键词: radar polarimetry;    radar receivers;    radar detection;    radar signal processing;    array signal processing;   

DOI  :  10.1049/rsn2.12129

来源: DOAJ

【 摘 要 】

Abstract In variable polarimetric monopulse radars, due to the number and types of data channels, the polarisation and angle information of the target in the receiving signals are non‐linearly coupled, which results in incorrect polarisation measurement and erroneous angle estimation through a linear digital beam forming (DBF) method. Based on a variable polarimetric monopulse radar with four channels, two non‐linear DBF methods are proposed to improve radar ability. Through the angle monopulse estimation principle and the reciprocity theorem, new pairs of summation and difference signals in all polarisation channels are formed to generate the correct polarimetric scattering and angle estimation results. The simulation and experiment results show that the proposed methods achieve a higher precision of polarisation measurement and more consistent angle estimation results compared to the linear DBF method.

【 授权许可】

Unknown