Name
Abstract | ||
|---|---|---|
The GF-3 satellite is the first multi-polarization synthetic aperture radar (SAR) imaging satellite in China, which operates in the C band with a resolution of 1 m. Although the SAR satellite system was geometrically calibrated during the in-orbit commissioning phase, there are still some system errors that affect its geometric positioning accuracy. In this study, these errors are classified into three categories: fixed system error, time-varying system error, and random error. Using a multimode hybrid geometric calibration of spaceborne SAR, and considering the atmospheric propagation delay, all system errors can be effectively corrected through high-precision ground control points and global atmospheric reference data. The geometric calibration experiments and accuracy evaluation for the GF-3 satellite are performed using ground control data from several regions. The experimental results show that the residual system errors of the GF-3 SAR satellite have been effectively eliminated, and the geometric positioning accuracy can be better than 3 m. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.3390/s17091977 | SENSORS |
Keywords | Field | DocType |
SAR,GF-3 satellite,atmospheric propagation delay correction,geometric positioning accuracy,ground control points | Reference data (financial markets),Residual,C band,Satellite,Synthetic aperture radar,Satellite system,Remote sensing,Multi-mode optical fiber,Engineering,Calibration | Journal |
Volume | Issue | ISSN |
17 | 9.0 | 1424-8220 |
Citations | PageRank | References |
6 | 0.47 | 4 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ruishan Zhao | 1 | 21 | 3.28 |
| Guo Zhang | 2 | 63 | 11.47 |
| Mingjun Deng | 3 | 21 | 4.63 |
| Kai Xu | 4 | 17 | 4.45 |
| Fengcheng Guo | 5 | 6 | 0.81 |