What does dead reckoning mean?
Working out where the robot is by starting from a known pose and adding up its measured speeds and turns over time, with no outside reference. Every measurement error is added up too, so the estimate drifts further from the truth the longer it runs, and heading errors hurt most.
In a lesson
That last point is the one to keep. In dead reckoning, heading error is the expensive one.
Learn it
- Taught in U1.3 Truth and belief The robot as a system, University
- Guide with live demos: Dead reckoning and odometry explained
Used in
- A3.9 Project: mission control
- U2.7 Project: a shape in the world
- U3.1 Integrating velocity
- U3.3 How the error grows
- U3.4 Calibration
- U3.5 A fix from a landmark
- U3.6 An error budget
- U5.7 Project: park it
- U6.6 Fusing a fix
- U6.7 Project: navigate on the estimate
and 6 more lessons.
Do the lesson in the simulator