太赫兹科学与电子信息学报2017，Vol.15Issue(2)：198-205,8.DOI:10.11805/TKYDA201702.0198
基于频带分割法反演电离层TEC参数
Retrieving ionospheric TEC based on the split-spectrum method
摘要
Abstract
The ionosphere can affect the phase of spaceborne Synthetic Aperture Radar(SAR) signal, which will degrade the quality of SAR imaging, especially for the low frequency wideband spaceborne SAR. Based on Advanced Land Observing Satellite-2(ALOS-2) SAR data, the ionospheric Total Electron Content(TEC) distribution is estimated by using the split-spectrum method in order to eliminate the impact of ionosphere. Firstly, the accuracy of the split-spectrum method for retrieving ionospheric TEC is validated. Then, the two-dimensional ionospheric TEC distribution is obtained based on the split-spectrum method using ALOS-2 data. The range resolution cell effect is also analyzed. The ionopheric TEC estimation accuracies of the split-spectrum method for three different typical areas in SAR image are compared. The results show that the split-spectrum method is robust to estimate the two-dimensional ionopheric TEC effectively. The range resolution cell and different scenes in SAR image also affect the TEC estimation accuracy of the split-spectrum method.关键词
星载合成孔径雷达(SAR)/电离层电子总含量(TEC)/距离向频带分割法/陆地观测技术卫星2号(ALOS-2)Key words
spaceborne Synthetic Aperture Radar/ionospheric Total Electron Content/split-spectrum method/Advanced Land Observing Satellite-2分类
信息技术与安全科学引用本文复制引用
王楠,付海洋,李索,徐丰..基于频带分割法反演电离层TEC参数[J].太赫兹科学与电子信息学报,2017,15(2):198-205,8.基金项目
国家自然科学基金资助项目(4140040125) （4140040125）
