Hi guys, I am aware that it is well known fact that dual- and multi-frequency receivers generally obtain RTK fix much faster than single frequency, and even float solutions are more accurate compared to single frequency GNSS.
Might anyone be able to share/explain the reason behind this?
My understanding is that the when resolving integer ambiguities for both frequencies, having multiple frequencies results in a narrower range of possible integer solutions for both frequencies, might this be correct?
Also, is this the same thing as ionosphere-free linear combination that I think is often mentioned for PPP?
P.S. I love reading up on the science behind GNSS but am not an expert by any measure, pardon me if some terms are used incorrectly