以立方衛星或微衛星執行GNSS掩星/反射訊號星系衛星任務的可行性研究

Since the launch of the FORMOSAT-3/COSMIC constellation in 2006, Global Navigation Satellite System Radio Occultation (GNSS-RO) observations of the atmosphere and ionosphere have been shown to be a very useful tool in both scientific research, as well as for producing observations on a global scale. The potential of GNSS Reflectometry (GNSS-R) to provide high value sea surface wind observations for precipitation forecasting has also gained attention in applications such as CYGNSS and the soon to be launched FORMOSAT-7R Triton missions. 15 years since the launch of FORMOSAT-3/COSMIC, the proliferation of small satellites, including CubeSats, have also greatly matured in their potential to serve as a lower cost distributed platform for GNSS-RO or R observations. In this project, we will perform conceptual and technological studies to determine the feasibility of implementing a constellation of six high-inclination small satellites to execute a GNSS RO and/or GNSS-R mission. We shall examine the potential and specifications of existing GNSS-RO/R payloads, including the NSPO GPS Receiver (GPSR), the NovAtel OEM-719 GNSS receiver, and the GeoOptics Cion-R. The concept of operations of the mission and system specification required to implement the mission will also be formulated. Potential Commercial Off the Shelf (COTS) or domestically developed spacecraft platforms and subsystems will also be examined.