Straight-line guidance with wireless control points. What system to take as a basis? Where to start thinking?

Question

Bluetooth

Hello.
I have a conveyor. one of the tasks is to ensure the movement of the cart. now it moves manually, it needs to be automated.
there is a trajectory of the trolley - a straight line of about 60 meters, moving forward and backward strictly along the line. due to uneven coverage, the cart can sometimes deviate from the trajectory, you need to return it programmatically.
a person walks nearby, periodically stopping or accelerating, and the cart moves after him synchronously, but along a given line.
The system as a result should turn out to be very mobile and consist exclusively of wireless components.
As a starting point, wifi / bluetooth tags are offered to me (at the beginning and end of the path and on a person), however, in reality I have never seen something like this.
Where to begin? What to take as a basis, so as not to invent a bicycle?
Thank you!