GNOS-II on Fengyun-3 Satellite Series: Exploration of Multi-GNSS Reflection Signals for Operational Applications
| Autor: | Yueqiang Sun, Feixiong Huang, Junming Xia, Cong Yin, Weihua Bai, Qifei Du, Xianyi Wang, Yuerong Cai, Wei Li, Guanglin Yang, Xiaochun Zhai, Na Xu, Xiuqing Hu, Yan Liu, Cheng Liu, Dongwei Wang, Tongsheng Qiu, Yusen Tian, Lichang Duan, Fu Li, Xiangguang Meng, Congliang Liu, Guangyuan Tan, Peng Hu, Ruhan Wu, Dongmei Song |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Remote Sensing, Vol 15, Iss 24, p 5756 (2023) |
| Druh dokumentu: | article |
| ISSN: | 15245756 2072-4292 |
| DOI: | 10.3390/rs15245756 |
| Popis: | The Global Navigation Satellite System Occultation Sounder II (GNOS-II) payload onboard the Chinese Fengyun-3E (FY-3E) satellite is the world’s first operational spaceborne mission that can utilize reflected signals from multiple navigation systems for Earth remote sensing. The satellite was launched into an 836-km early-morning polar orbit on 5 July 2021. Different GNSS signals show different characteristics in the observations and thus require different calibration methods. With an average data latency of less than 3 h, many near real-time applications are possible. This article first introduces the FY-3E/GNOS-II mission and instrument design, then describes the extensive calibration methods for the multi-GNSS measurements, and finally presents application results in the remote sensing of ocean surface winds, land soil moisture and sea ice extent. Especially, the ocean surface wind product has been used in operational applications such as assimilation in the numerical weather prediction model and monitoring of tropical cyclones. Currently, GNOS-II has been carried by FY-3E, FY-3F (launched in August 2023) and FY-3G (launched in April 2023). It will be also carried by future follow-on FY series and a more complete multi-GNSS reflectometry constellation will be established. |
| Databáze: | Directory of Open Access Journals |
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