Realization of Outside Calibration Method Based on the Sensitivity Equation for Dual-antenna Airborne Interferometric SAR
基于三维重建模型的机载双天线干涉SAR外定标方法及实现

The outside calibration for the Dual-antenna Airborne InSAR was researched by 3D reconstruction model.The error model based on sensitivity equations was educed by differentiating InSAR imaging equations based on adopting Sensitivity Equations.Then the biases of interferometric parameters were solved by several accurate Ground Control Points(GCPs). The calibrated interferometric parameters were calculated by iteration method.And the accurate Digital Elevation Model (DEM) was reconstructed.A set of InSAR data was adopted to do calibration experiments,which was derived by the Airborne InSAR system researched independently by Institute of Electronics,Chinese Academy of Sciences.The experimental results show that this algorithm is efficient.