Also the distance does not seem to be effecting the readings at all of the round trip time. We are not sure why the timing is not increasing with distance possibly because the speed at which it is traveling is just to fast to really keep track of
We are good but not better than the laws of physics. Go with a GPS system.
Go with a GPS system.
Typically, a GPS will tell you where you are +/- 10 meters
Civilian GPS Accuracy6"=15.24cmDo you know what you talking about?