I am attempting to educate myself about the process of navigating by
the observation of landmarks or beacons. This is not new technology,
since seamen have used this method for centuries. But, for some reason
I have been unable to find a good web site to teach me the method.
Perhaps I am using the wrong search terms.

The papers I am finding are generally over my head mathmatically, though I have good algebra and some trig. Perhaps someone can recommend a site which will start the explanation at a lower level, or even explain some of it here on the newsgroup.

I can visually picture how observation (from the robot's camera) of the angle between two landmarks will restrict the possible position of the robot to an arc. Then, adding a 3rd landmark will allow another arc to be drawn, and the intersection of the two arcs is the position of the robot.

But, mathmatically, how are these arcs calculated?

Joe Dunfee

The papers I am finding are generally over my head mathmatically, though I have good algebra and some trig. Perhaps someone can recommend a site which will start the explanation at a lower level, or even explain some of it here on the newsgroup.

I can visually picture how observation (from the robot's camera) of the angle between two landmarks will restrict the possible position of the robot to an arc. Then, adding a 3rd landmark will allow another arc to be drawn, and the intersection of the two arcs is the position of the robot.

But, mathmatically, how are these arcs calculated?

Joe Dunfee