7 ms·
I wished it could tell where I am in the underground tunnel when the GPS doesn't have a connection.
by xutopia 5y ago
I wished it could tell where I am in the underground tunnel when the GPS doesn't have a connection.
- andylynch 5y agoLooking at https://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation https://stackoverflow.com/questions/7829097/android-accelero... it seems that this could be doable - generally it looks like these devices are too noisy for straightforward inertial navigation, but constraining the problem to how far along your train is in a tunnel with occasional wifi is much more possible.
- Aachen 5y agoOccasional WiFi? In a tunnel? Usually GPS devices assume you just maintain speed, which for most tunnels works out.