Results of GrafNav/GrafNet


It took a while to get this software to work. All postprocessing software is complex and has a lot of parameters etc. to play with. But for Zuiddijk I got some results:
The first is the Float Solution of
100824.427 / 456543.344
and the next is the Quick Static Solution. This method gives (nearly) the same result as the float solution.
A "Fixed Static Solution" was possible. But this method has much trouble with bad data. And that is the case here also:
100824.137 / 456543.134 The official position is:
100824.367 / 456543.432
With GrafNav you can get a good look at the data. I have placed here some graphics detailing different ascpects of the calculations. You will see that there was a moment towards the end where the data played havoc.

height in time forwards and backwards calculations position standard deviation C/A code RMS plot
here is the float solution:
float solution
and here the Quick Static:
quick static
And now for the not-so-good Fixed solution:
fixed static

Ronald J. van der Kamp
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