Browsing by Author "Hsiao, Chun-Chieh"

Now showing 1 - 2 of 2

In Quest of Global Radio Occultation Mission for Meteorology beyond 2011
(2009)
Fong, Chen-Joe
;
Yen, Nick L.
;
Chu, Chung-Huei
;
Hsiao, Chun-Chieh
;
Yang, Shan-Kuo
The FORMOSAT-3/COSMIC mission consisting of six satellites is the world\'s first demonstration of near real-time operational GPS Radio Occultation (RO) constellation mission. The success of the mission expected to operate through 2011 has initiated a new era for operational GPS RO soundings. The World Meteorological Organization had recommended continuing RO observations operationally and urges planning for a complementary follow-on mission. The follow-on mission will be a new constellation of 12 to 18 satellites equipped with the GNSS RO payload and collect over 9000 soundings per day. This higher density of sounding profiles will be useful for global and mesoscale models, and also severe weather forecasting. The follow-on mission will establish international standards so that future RO missions deployed by any country can be used together for operations and research. In this paper, we present the state-of-the-art achievements and the results of the current mission; as well as the follow-on mission planning progress.(1) (2)
Space-Based Global Weather Monitoring System: FORMOSAT-3/COSMIC Constellation and Its Follow-On Mission
(2009-07-01)
Fong, Chen-Joe
;
Yen, Nick L.
;
Chu, Vicky
;
Hsiao, Chun-Chieh
;
Liou, Yuei-An
The FORMOSAT-3/COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climate) mission consisting of six low-Earth-orbit satellites is the world's first demonstration of Global Positioning System radio occultation in a near real-time operational constellation for global weather monitoring and research. The mission has produced over 1800-2200 high-quality good atmospheric sounding profiles per day. Currently, the atmospheric soundings data are assimilated into operational numerical weather prediction models for global weather prediction, including typhoon/hurricane forecasts. The radio occultation data have been shown to have a positive impact on weather predictions at many national weather forecast centers. The goal of a proposed follow-on mission is to transfer from the current experimental research mission to a significantly improved real-time operational mission, which will reliably provide no less than 8000 soundings per day. We envision a new and improved mission to be a constellation of 12 satellites with data latency less than 1.5 h, which will provide greatly enhanced opportunities for operational forecasts and scientific research. In this paper, we describe highlights of the results of the current mission, the follow-on mission definition trade analysis results, and the new spacecraft constellation system design with the next-generation radio occultation receiver onboard.