I have 3 moving points which I want to find the distance between.
Each point transmits radio waves which the others receive. At each point the field strength of the transmitted wave from the other two points can be found and this field strength can be roughly correlated to a distance.
So essentially I will have a triangle and have $2$ rough estimates of the length of each side. I will be able to use these distances + the headings to work out $2$ more estimations of each length and then try and outrule anomalous data by weighting values which are closer together.
If it was possible to work out the distance using the headings alone the results would become much more accurate however I cannot find a way to do this.