高斯牛顿滤波相位解缠算法OA

In order to effectively improve the accuracy and reliability of interferogram phase unwrapping,a phase unwrapping algorithm based on Gauss-Newton filtering was proposed.First,the unwrapped phase and phase gradient were estimated simultaneously as a state variable,and the Gauss-Newton filtering phase unwrapping procedure based on the extended state variable dimension was constructed.Second,the working path of the Gauss-Newton filtering phase unwrapping procedure was planned by a path tracking strategy based on heap sorting in order to improve the efficiency and accuracy of phase unwrapping.Finally,the efficacy of the proposed method was validated through the utilisation of simulated and measured data experiments,with a comparative analysis conducted against the commonly employed branch-cut,iterative least squares,quality-guided,and unscented Kalman filtering phase unwrapping algorithm,and the accuracy is improved by at least 7.67%compared with the unscented Kalman filtering phase unwrapping algorithm,which also performs well in terms of accuracy.