5 Year Technology Roadmap for VLBI Global Observing System (VGOS)

A Technology Development, Infusion, and an interleaved joint cal/val opportunity plan is described for the VLBI GLOBAL OBSERVING SYSTEM (VGOS), and Earth Science satellite missions that measure water vapor such as Global Precipitation Measurement (GPM) Core Observatory that covers the Earth from 65°S to 65°N. The Jason Continuity of Service (Jason-CS) mission that will extend global sea-level records to 2030 and beyond is also a beneficiary and potential partner.The Space Geodesy Project (SGP) technique known as Very Long Baseline Interferometry (VLBI) is already deployed worldwide, and there are technology returns on investment to be gained by looking at the water vapor (wet) delay calibration in a 5 year plan that serves to improve atmospheric models for Global Precipitation Measurement (GPM), Jason-CS, and the higher spatial resolution International Terrestrial Reference Frame (ITRF), a primary mission of SGP.