| 摘要(英) |
A remote sensing satellite, FORMOSAT-5, was developed by National Space Organization (NSPO) and carried a science payload, Advanced Ionospheric Payload (AIP). To reach the science requirement, AIP could operate by different measurement mode and provide the operating timeline to NSPO. The first AIP measurement was performed on 7 September 2017 and obtained the first-orbit data in the night-sight. After in-orbit checkout in September and October, AIP was routinely obtained the science data. The global ion density map was obtained every two days, and the global ion velocity and ion temperature were obtained every four days. AIP was operated by the sampling rate 1,024 samples per second and finalized to maximize useful science data. During the in-orbit checkout, it was found that the satellite has a much lower potential with respective to environmental plasma from measured current-voltage curves. In order to improve accuracy of the AIP measurement, co-incident observations have been scheduled with Millstone Hill incoherent scatter radar to identify possible bias on the derived AIP parameters. An area that might be lower than the background plasma density was occasionally observed in the ionosphere, which is the plasma density irregularities. Calculating the distribution of the plasma density irregularities and the occurrence rate could realize the seasonal variations of plasma density irregularities in the equatorial region. The result could compare with the past literature to prove the correctness of ion density measured by AIP. |
| 參考文獻 |
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林再文, 先進電離層探測儀, 國立中央大學, 博士論文, 2016.
FORMOSAT-5 Ground Segments Interface Control Document, FS5-ICD-0006.
SDC/AIP Data Website, http://sdc.ss.ncu.edu.tw/ |
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