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Smartphone SatNavs to get centimetre-perfect GNSS receivers in 2018

Dave 126 Silver badge

> How accurate is this new chipset supposed to be at motorway speeds?I would think it needs to be accurate to less than 2m in order to be able to distinguish specific lanes.

I for one travel at motorway speeds within a lane and not across them! Phone GPS units usually refresh once per second, some automotive units at 5 or 10 times a second. The accuracy of GPS isn't dented by speed (which is also calculated from the signals).

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