Ultra-wideband radio frequency tracking for determining and controlling positioning error of an implement on a work vehicle

A method of position determination of an motor grader blade on a motor grader, wherein the motor grader includes one or more actuators configured to adjust a position and orientation of the motor grader blade relative to a main body of the motor grader in response to control signals received from an electronic controller, the method comprising:

• determining a position of a first radio frequency (RF) device relative to a local reference frame using ultra-wideband ranging between the first RF device and the at least one additional RF device,
• wherein the first RF device is mounted at a fixed location relative to the motor grader blade, and
• wherein the at least one additional RF device is mounted at a fixed location relative to the local reference frame;
• determining a position of the local reference frame relative to a global coordinate system;
• determining the position and the orientation of the motor grader blade relative to a global coordinate system based at least in part on the determined position of the first RF device relative to the local reference frame and the determined position of the local reference frame relative to the global coordinate system,
• wherein the motor grader blade is controllably movable relative to the local reference frame;
• determining a plurality of target positions for the motor grader blade in the global coordinate system at different locations on a work site surface based on an accessed work site plan;
• and
• transmitting one or more control signals from the electronic controller to the one or more actuators to controllably adjust the position and the orientation of the motor grader blade as the motor grader moves across the work site surface to cause the determined position of the motor grader blade to approach the target position of the motor grader blade at each of the different locations on the work site surface.