Wen-Hao Yeh1, Yung-Fu Tsai 1, Chen-Tsung Lin 1
1Taiwan Space Agency
NCKU team, NCU team, TACC team
Triton, the first Taiwan-self built meteorological satellite mission, and also the second Taiwan meteorological satellite mission, was launched in 9th October, 2023. The mission payload of Triton is Taiwan Space Agency (TASA) in-house built GNSS-Reflectometry (GNSS-R) receiver. GNSS-R receiver is used to receive the Earth surface reflected GPS signal for ocean surface wind speed retrieving. The product of Triton GNSS-R receiver is delay-Doppler map (DDM). In order to process DDM to ocean surface wind speed, the GNSS-R process system is built in Taiwan R/RO process system (TROPS) for ocean surface wind speed retrieving. The v1.0 ocean surface wind speed has been released in the website of Taiwan Analysis Center for COSMIC (TACC), Center Weather Administration (CWA) in the end of May, 2024. The v2.0 is planed to be released in the end of August, 2025. In this report, the detail of DDM retrieval process and the performance will be introduced.
