Galileo was designed from the ground up in close collaboration with the USA: GPS and Galileo share L1 (1575.42 MHz) and L5/E5a (1176.45 MHz). In the future, a dual frequency GPS+Galileo L1/L5 receiver will deliver products with an incredible ratio between (performance+availability)/silicon.
According to scheduled launches there could be 12+ satellites supporting open L1+L5 by the end of this year already.
In the meantime, NVS touches base first in the mass-market receiver domain by delivering consistent carrier-phase measurements for GPS+Glonass+Galileo.
I have recently run zero-baseline double-differences in static, perfect visibility conditions using a high-end survey antenna:
|Figure 1: Galileo double differences in static zero-baseline (NV08C-CSM hw4.1)|
With RTKLIB I run a Galileo-only static IAR and the result is as expected:
|Figure 2: Static IAR with Galileo only (4 IOVs)|
|Figure 3: Static IAR with GPS+Galileo|
Understandably, Skytraq is working on GPS+Beidou carrier phase and I may publish some results on that too although visibility of Beidou MEOs is not great from here.
In the meantime, for people who wonder where uBlox NEO6T stands in terms of GPS carrier phase noise in similar conditions to the above here it is my result:
|Figure 4: GPS double differences in static zero-baseline (uBlox NEO6T)|