How to add relative geolocation functionality to an autonomous car

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1

Ok, so I have an autonomous car, and I want to track it's relative position to it's origin, in an area of about 1 m2.
Can I use a wifi module for this? How precise will this be?
Or perhaps what module will be suitable
NB: Precision is quite a priority

2

Probably bluetooth signal strength triangulation is the easiest way.

3

Pozyx maybe.

Or place a grid of sensors in the specific area the robot moves on.

Bluetooth signal strength may work, if you can find a way to sufficiently precise measure this from at least three different points around the area.

4

wvmarle:
Pozyx maybe.

Or place a grid of sensors in the specific area the robot moves on.

Bluetooth signal strength may work, if you can find a way to sufficiently precise measure this from at least three different points around the area.

Just checked out Pozyx, way over cost budget. The project is quite small.

5

Well, it's not a trivial thing you're asking for - and I can tell you that even without you having defined the required precision.

6

Yeah I figured. Ok, thanks @IndianaTux and @wvmarle. I'll try and figure out bluetooth triangulation. Any suggestions on where I should start from? devices I could use?