I'm also working with lat, lon through FSUIPC. Once I convert the data, I seem to be getting better resolution in latitude (decimal places corresponding to movement in feet) than in latitude (movement in 10's to 100's of feet). Is this a limitation of the representation in Flight Simulator, or is there something that can be done to more accurately measure location? I'm trying to measure helo movement at hover, and with 10ft increments, I get zero variation.
The Fs units are designed to provide the maxiumum resolution in 64 bits, without even any "waste" due too a separate exponent as with floating point. So the whole possile 360 degree in Longitude uses all 64 bits, as does the 180 degrees of Latitude.
At the equator, where Latitude/Longitude angles represent the same distance, you would therefore expect the resolution to be twice a good in latitude.
I've not worked out the actual figures, but I am pretty sure you have an error if you are only getting 10-100 feet -- things like buildings and runways, all scenery in fact, is laid down using the same units.
Regards,
Pete
