3 ms·
The get higher accuracy requires more precise hardware / additional hardware on the receiving end which drastically drives up the cost. Systems like this [1] w
by JaimeThompson 5y ago
The get higher accuracy requires more precise hardware / additional hardware on the receiving end which drastically drives up the cost.
Systems like this [1] which you may have seen being used on construction sites allow much higher accuracy.
[1]https://en.wikipedia.org/wiki/Differential_GPS https://en.wikipedia.org/wiki/Differential_GPS
- anfractuosity 5y agoIs it possible to get close to centimetre accuracy without using ground stations like DGPS? Would you get finer resolution if a GPS receiver also used an atomic clock? I thought this was interesting - https://www.gps.gov/systems/gps/performance/accuracy/#difference https://www.gps.gov/systems/gps/performance/accuracy/#differ... the difference between military GPS and civilian GPS sounds like it uses 2 frequencies.
- lallysingh 5y agoEffectively the problem is that the atmosphere (mostly ionosphere) distorts the ranges a bit. Different frequencies distort differently so you can use data from two to compensate. IIRC, used to work in a gps accuracy firm many many years ago