undefined | Better HN

0 pointshedgehog1y ago0 comments

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.

0 comments

SkyPuncher1y ago

I 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.

hedgehogOP1y ago

The 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.

spike0211y ago

That makes sense. I would've thought the accelerometer/gyro in the phone could be used similarly but I'm probably wrong.

astrange1y ago

It can, but it's harder because you can mount the phone any way you want in the car, or not mount it at all.

j / k navigate · click thread line to collapse