Why Better 3-D GPS Could Disrupt The Location Business

Your GPS could soon know how high you are. Rice University scientists have written some smart software that better interprets the signals coming from space that tell a GPS device its altitude, with an accuracy of around a centimer. You may never have noticed it, but even when your car’s unit is reporting your position to within a few meters, its guess as to your altitude is very poor–much worse than one centimeter.

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Why Better 3-D GPS Could Disrupt The Location Business