You are correct. Even military grade inertial navigations systems are subject to a level of drift in velocity and displacement
You can characterise the "noise" of the sensor through calibration while the device is stationary
You can use external devices to "aid" the displacement for example the rotation of wheels can give you a speed which can be used with a Kalman Filter to give a more accurate velocity.
You can aid the rotational direction with gyroscopes and magnetometers. The data from these sensors are combined with the accelerometer data using Kalman filters typically.
It is a well documented and published topic if you search for Inertial Navigation but the mathematics can be pretty complex.
You can characterise the "noise" of the sensor through calibration while the device is stationary
You can use external devices to "aid" the displacement for example the rotation of wheels can give you a speed which can be used with a Kalman Filter to give a more accurate velocity.
You can aid the rotational direction with gyroscopes and magnetometers. The data from these sensors are combined with the accelerometer data using Kalman filters typically.
It is a well documented and published topic if you search for Inertial Navigation but the mathematics can be pretty complex.
Statistics: Posted by scotty101 — Thu Jul 04, 2024 7:36 am
