Open AccessInfluence of the frequency deviation on the simultaneous polarisation scattering matrix measurement
Author(s) -
Liu Qiaoling,
Li Chao,
Pang Chen,
Li Yongzhen,
Wang Xuesong
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0457
Subject(s) - frequency deviation , standard deviation , stability (learning theory) , position (finance) , matrix (chemical analysis) , calibration , observational error , phase (matter) , physics , scattering , frequency modulation , waveform , mathematics , optics , computer science , acoustics , algorithm , radar , statistics , bandwidth (computing) , materials science , telecommunications , automatic frequency control , finance , quantum mechanics , machine learning , economics , composite material
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.