| Autor: |
Wang Bingjia, Cui Yang, Liang Guang, Zhou Wenmei, Yao Xiaosong, Xuedi Chen, H. Y. Ma, Guo Xiaolu, Zhao Shenggang, Pan Chao, Li Liangcheng |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
The Review of scientific instruments. 92(10) |
| ISSN: |
1089-7623 |
| Popis: |
Errors in the attitude of optical payloads onboard remote-sensing satellites have a significant impact on image quality and high-precision quantification. This study presents two on-orbit calibration techniques for optical payloads. Self-calibration of the orientation of the optical axis of an optical payload can be achieved through on-orbit observation and imaging of star points based on the pinhole imaging principle. Separate on-orbit observation and imaging of star points can facilitate the mutual calibration of an optical payload and a star sensor as well as the correction of their installation errors. These two techniques are validated through ground and on-orbit satellite tests. The results show the following: The self-calibration error for a typical remote-sensing satellite is better than 0.2″ and the mutual-calibration error is better than 2″ for its optical payload and star sensor. Self-calibration and mutual calibration are effective for improving the calibration accuracy for the on-orbit orientation of optical payloads. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
