A substitute for GPS

From Techcrunch: Google Mobile Maps PinPoints Your Location Without GPS
This technology uses cell phone towers (and triangulation) to locate you. While not as perfect as GPS, it should be useful for general navigation, especially with added algorithms to smooth out the jumpyness. It is an idea long speculated on (in the transportation community see: this article by my late colleague YB Yim for a review and this for one of the earliest papers on the idea. ) that is finally seeing commercialization.

One thought on “A substitute for GPS

  1. Well it’s not a perfect solution, while with GPS you have constant satellite feed (the only requirement is to “see” the sky), with google mobile maps it’s to have permanent internet connection, which is not always cheap to buy.


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