But if you don't have GPS, then you don't have a high-confidence low-precision absolute position input to your system? Whereas with wheels you already get a lot of data about that when they are not turning at all.
A friend tried to make a phone ruler app (using IMU) and the experience was that it didn't take very long for the distance to shoot to the horizon. So, thought I should try how this kind of solution would work with the hardware of today, but it turns out there seem to be zero such apps in the Play Store.. The tools of that category all seem to use a camera.
I think the lack of these tools is a testament to the approach not really working.
This type of solution works better at large scale where you have space and power budget for a lot more IMUs. Phones are very power and space constrained, so you only have room for 1-2 IMUs. In a car, 10W isn't a problem and there's plenty of room for higher power and higher quality sensors.
A friend tried to make a phone ruler app (using IMU) and the experience was that it didn't take very long for the distance to shoot to the horizon. So, thought I should try how this kind of solution would work with the hardware of today, but it turns out there seem to be zero such apps in the Play Store.. The tools of that category all seem to use a camera.
I think the lack of these tools is a testament to the approach not really working.