LH2
Two obvious issues there:
(1) Are we certain that's how GPS determines velocity, and it's not using some quasi-doppler function? (Archae86 certainly believes so, and that was my general belief also).
(2) This assumes the same random variation in errors at each position report, and that the reported position at T2 isn't some function of the reported position at T1, as well as of the actual position?
- I do agree with the error propogation method however, at-least assuming that the total errors are normally distributed, which seems a fair assumption.
G