[jakecopp]

This is great! How would accelerometer + algorithm power usage compare to GPS?

Is there any reason this isn't already used?

[fisian]

This principle is already sometimes used for determining the position of UAVs (e.g. Quadcopters). So absolute position is provided by GPS and short term movements can be calculated from accelerometers and other sensors.

Of course sensor data can only provide a relative position. After longer intervals of solely relying on the relative sensor-based position small errors can accumulate which makes "synchronization" with GPS necessary to retain accuracy.

[dustinmr]

It’s fun to think about how related that is to maritime navigation and in particular Dead Reckoning.

The same thing has been taught for hundreds of years in that realm. Her you take it 3D.

[random4369]

The power consumption of computing the kalman filter is negligible compared to the power consumption of the gps module.

I thought that ios and android did this already for a long time.