OK, but then, and correct me if I am wrong....
With one coordinate pair (lat,long) I do not know where I am facing/heading so not sure where to rotate to be aiming at moving target.
So suppose my system is pointed towards south, and my moving object is north of my location.... so angle would be 180 deg.
I guess that 2 pairs of coordinates would not give you that info, would it? (taking into consideration we do not know bearing or azimuth of base station)
Edit:
I guess you are right.
Bearing we can get with 2 GPS locations, but then I need to know where I am facing to know my rotation to aim, and that needs to be done using (bearing calculation - heading calculation) of base station. right?