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How accurate is GPS?	by McNutcase	2009-08-26 16:23:07
General rule of thumb, 5-10m horizontal	by AndyA	2009-08-26 16:53:33
OK. That tells me they were actually using DGPS.	by McNutcase	2009-08-26 17:25:24
It could just be WAAS/EGNOS.	by AndyA	2009-08-26 17:43:44
They were getting high accuracy in real time.	by McNutcase	2009-08-26 17:47:44
We have a company saying	by AndyA	2009-08-26 17:57:54
That sounds like a play on "Time is money".	by kahuana	2009-08-26 19:10:37
It used to be that was the only way.	by AndyA	2009-08-26 19:24:28
In the olden days (e.g. early 90's) GPS coverage wasn't so good. In some areas you simply had to collect for a long time, there was no alternative. There are tools that will tell you for a given location when the best time is to go and collect data and how good the coverage will be, these days with 30+ SVs in orbit the difference is mainly academic unless you are at the bottom of a big pit but it used to be critical.
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Oddly enough this happened in the mid 90's.	by kahuana	2009-08-26 19:30:08

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