Influence of the frequency deviation on the simultaneous polarisation scattering matrix measurement

The Journal of Engineering

Qiaoling Liu¹  Xuesong Wang¹  Chao Li¹  Yongzhen Li¹  Chen Pang¹ 

[1] State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, National University of Defense Technology;

关键词: frequency modulation;    radar cross-sections;    matrix algebra;    S-matrix theory;    calibration;    IFD;    calibration method;    radar frequency stability;    peak deviation;    simultaneous polarisation scattering matrix measurement;    linear frequency modulation waveforms;    opposite slopes;    mathematical model;    intermediate frequency deviation;    simultaneous polarisation measurement;   

DOI  :  10.1049/joe.2019.0457

来源: DOAJ

【 摘 要 】

Based on a pair of linear frequency modulation waveforms with opposite slopes, the mathematical model of the influence of intermediate frequency deviation (IFD) and sampling frequency deviation (SFD) on simultaneous polarisation measurement is derived. An IFD and SFD joint estimation and calibration method is proposed in this article. Simulation and real data results show that the radar frequency stability can change the position and phase of the polarisation scattering matrix (PSM) measurement. The approach proposed in this article can regulate the peak deviation effectively, compensate the phase error and accurately acquire the four elements of PSM.

【 授权许可】

Unknown