A Distributed Target-Based Calibration Method for Hybrid Quadrature-Polarimetric SAR
- Resource Type
- Conference
- Authors
- Han, Yonghui; Liu, Xiuqing; Hou, Wentao; Gao, Yao; Wang, Robert; Fan, Huaitao; Liu, Dacheng; Zhao, Fuhai
- Source
- IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2022 - 2022 IEEE International. :2538-2541 Jul, 2022
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Power, Energy and Industry Applications
Signal Processing and Analysis
Atmospheric modeling
Crosstalk
Geoscience and remote sensing
Data models
Calibration
Reliability
Synthetic aperture radar
Polarimetric Calibration
Hybrid Quadrature Polarimetric SAR
AS-Target
- Language
- ISSN
- 2153-7003
Due to the large equivalent transmit crosstalk in hybrid quadrature polarimetric SAR system, traditional calibration methods using azimuthally symmetric distributed targets (AS-Targets) cannot work. In this manuscript, a preprocessing method of AS-Targets' covariance matrix is proposed, which makes equivalent crosstalk after processed become small to achieve system calibration through the AS-Targets. Simulation and airborne SAR data testing verify the reliability of the proposed method. The results show that the method presented in this manuscript can well calibrate the hybrid quadrature polarimetric SAR system using AS-Targets.