Study On Calibration Of Polarization Sensitive Array

The calibration and remedy of polarization sensitive array, including misorientation, gain and phase error and coupling error were researched in this dissertation. It is that the modeling of error matrix for gain and phase error and the coupling error, and the estimation of various error matrix in different circumstances was mainly studied. The study focuses on two aspects:reducing the requirement of signal source and improving the estimation precision of error matrix.Firstly, the misorientation of the electromagnetic vector sensor array has been studied. On the one hand, a novel calibration method has studied by using two parameter unknown reference signals, based on the misorientation of the electromagnetic vector sensor array. On the other hand, two novel estimation methods in the first-order Taylor approximate are presented by using one parameter unknown reference signal, based on the relationship of Poynting vector between ideal electromagnetic vectors and misorientation electromagnetic vectors. The computational formulas of the orientation errors have been derived in this paper.Secondly, two novel calibration and remedy methods of gain and phase error for Triple-dipole sensor have been proposed. Reference signals with one or two parameter unknown incident on the ideal and nonideal triple-dipole sensor and the time sample data of those have been used to estimate the error matrix.Lastly, the mutual coupling between the array element channels of electromagnetic vector sensor has been studied. On the foundation of analysing the influencing factors of coupling error, the mathematical model of the array element channel coupling error matrix has been established. According to the characteristics of coupling error, equivalence transformation of matrix has done, and which simplifies the solving of coupling error matrix.