Interesting although I can't imagine improved accuracy for civilian use at this point is any more than splitting hairs. My old unit detects my speed and direction when I walk about 10 ft. Perhaps commercial use (e.g. surveying) or military use the speed to get to required accuracy will be improved.
I think the main hope for appreciable better civil accuracy stems from the addition of a new civil frequency. Contrasting the arrival time at two frequencies allows a better estimate of ionospheric delay error from a given satellite to a given unit. However, obviously in order to get this benefit your receiver must both receive the extra frequency and do the math.
So this is a hope for future improvement, not current, so far as civil use is concerned.
In some reception conditions the stronger signal strength my let your receiver use a satellite not otherwise available to it, which might give better reception geometry, so perhaps some help from that for current units.
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