Quote:
Originally Posted by Sammi79
Lookin' good mate  one thing though, re yellow highlight above, how is the max error scaled, 0% at 0hr(since last fix), 50% at 12hrs etc? If it was scaled with distance travelled instead I.e. 0% @ 0km, 50% @ 50km etc it would make more sense. If you don't move then your next dead reckoning error should be 0. Of course I realise this involves more math to find the distance between fixes (or more correctly between real locations at time of fixes) and may be more trouble than it is worth. Also, can the scale exend the maximum error? - 500% @ 500km  |
I have no problem making it based on distance travelled vice time. In order to do so we must define all the variables. The variables that come to mind to me are:
- max error %
- max error % based on distance travelled or fixed value?
Let's say we do it by distance travelled. We define the max error % to be 0.15 (15%). We feed this max error % into a random function with the minimum value of -max error % and max value of max error % (so we can get a + or - error %) to get a random error % to simulate real life conditions (sometimes navigator is extremely accurate sometimes he's not - human nature of error). We then take that random error % and apply it to the total distance travelled between fixes. Take the result of that and add it to total distance travelled to get new fix position. How does that sound?