A STUDY ON IN-ORBIT CALIBRATION FOR A SPACEBORNE DISTRIBUTED INTERFEROMETER
文献类型：会议论文
| 作者 | Lan, Ailan; Yan, Jingye; Wu, Lin; Zhao, Fei; Wu, Ji |
| 出版日期 | 2018 |
| 会议日期 | JUL 22-27, 2018 |
| 会议地点 | Valencia, SPAIN |
| 关键词 | in-orbit calibration discrepancy inter-satellite distance spaceborne distributed interferometer |
| 页码 | 1043-1046 |
| 英文摘要 | For a spaceborne distributed interferometer, receiving channels are deployed on separated satellites. Traditional calibration methods for interferometers are not suitable for the new system. In this paper, a new calibration method, signal calibration, is proposed for the distributed interferometer. It is used to calibrate the transfer characteristics of channels, rather than power-voltage relationship. Moreover, the method is not limited by the size of array. The signal calibration can used as an internal calibration to reduce the impact of the discrepancy of receivers or an external calibration to correct the inter-satellite distance. To implement the internal calibration, a sine-wave calibration signal is produced by DAC for different receivers instead of the common noise to calibrate the gain and phase unbalance of the receivers in different satellites. To correct the inter-satellite distance, a double-frequency signal is generated, and by means of the phase lag difference between two frequencies the inter-satellite distance measurement error can be corrected. |
| 会议录 | IGARSS 2018 - 2018 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM
 |
| 语种 | 英语 |
| ISSN号 | 2153-6996 |
| ISBN号 | 978-1-5386-7150-4 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/6696]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | Lan, Ailan,Yan, Jingye,Wu, Lin,et al. A STUDY ON IN-ORBIT CALIBRATION FOR A SPACEBORNE DISTRIBUTED INTERFEROMETER[C]. 见:. Valencia, SPAIN. JUL 22-27, 2018. |
入库方式： OAI收割
来源：国家空间科学中心
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