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The car probably has odometry and inertial sensors to do position updates while GPS is unavailable. That's actually how some of the original car nav systems wor
by hedgehog 3y ago
The car probably has odometry and inertial sensors to do position updates while GPS is unavailable. That's actually how some of the original car nav systems worked even pre-GPS in the 80s.
- spike021 3y agoThat makes sense. I would've thought the accelerometer/gyro in the phone could be used similarly but I'm probably wrong.
- astrange 3y agoIt can, but it's harder because you can mount the phone any way you want in the car, or not mount it at all.
- SkyPuncher 3y agoI strongly doubt that. Cars simply have bigger, more power antennas because they don't have to be packaged in a phone. One of our cars has a wireless modem that can be used for a hotspot. I've driven to plenty of areas where my phone has no service (think remote and hilly terrain), but the car still has two or three bars.
- hedgehog 3y agoThe sensors are there and report on CAN bus, I just don't know enough about how the nav systems are integrated to know if they actually use the data.