gloom wrote:There's no simple answer to that, I guess.
So, based on my own experience (I've been running fleet position monitoring solution on trains professionally), you can quite easily get about 3m accuracy for 98% of position reports on multi SatNav, and around 10m based on only one network. Back in the days of "start GPS config", when they had 24Sats, it was estimated at a few tens (I think I've read guaranteed difference to real location was 40m). Since the numbers are quite close, it could be explanation to your question.
mxaxai wrote:. Unless there's a specific mention of, for example, "NACp > 10" in the datasheet or handbook, the only thing you know for sure is that the device complies with FAA regulations. For the GTX 335 that appears to be NACp >= 8, i. e. 92.5 m. Anything else is just marketing.
airplanecrazy wrote:For the flight I am examining the NACp is a minimum of 8, a maximum of 10, and an average of 9.9 (meaning most of the time it was 10). Do you believe that these values are not really accurate? I was thinking they were accurate, and that the actual uncertainty was between 3 and 10 meters. I was just trying to get a sense if the true value was closer to 10 or closer to 3. Thx.
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