![]() Other Android phones, using Android 8 or later, have version 1 implemented in the FLP, which reduces wrong-side-of-street occurrences by approximately 50%. Google says that version 2 of this system “reduces wrong-side-of-street occurrences by approximately 75%.” This is first launching on the Pixel 5 and Pixel 4a 5G with this month’s security update. Yellow = Path followed, Red = without 3D mapping aided corrections, Blue = with 3D mapping aided corrections. ![]() Picture of a pedestrian test, with Pixel 5 phone, walking along one side of the street, then the other. When you use your device’s GPS while walking, Android’s Activity Recognition API will recognize that you are a pedestrian, and if you are in one of the 3850+ cities, tiles with 3D models will be downloaded and cached on the phone for that city. The 3D mapping aided corrections module, in Google Play services, includes tiles of 3D building models that Google has for more than 3850 cities around the world. Google is addressing this problem with 3D mapping - which features building models - aided corrections that account for obstructions and inform the GPS system. The GPS chip assumes that the signal is line-of-sight and therefore introduces error when it calculates the excess path length that the signals traveled. This manifests as apps showing that you are on the wrong-side-of-the-street, or even a different block entirely. GPS accuracy plummets in dense urban areas due to GPS - which requires line of sight - signals being reflected by high-rise buildings. December security patch rolling out to Google Pixel, factory images & OTAs live.December Pixel Feature Drop: Adaptive Sound, Connectivity, Charging, and better GPS for Pixel 5.Google is now improving GPS, starting on the Pixel 5 and 4a 5G, with the help of 3D mapping. The flaws and constraints of GPS in dense urban environments are well-known by anybody that has used Google Maps in cities, especially downtown.
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