3 ms·
Title is misleading - as far as I know centimeter accuracy is only possible with an RTK base station in the area where you're using the GPS, e.g. in a survey. I
by zwieback 13y ago
Title is misleading - as far as I know centimeter accuracy is only possible with an RTK base station in the area where you're using the GPS, e.g. in a survey. I'm guessing the chipset allows capturing of raw data that can be post-processed.
http://en.wikipedia.org/wiki/Real_Time_Kinematic http://en.wikipedia.org/wiki/Real_Time_Kinematic
- 7952 13y agoThey have a $50 version that supports raw data. Although, without a high quality antenna I wonder if RTK is even going to help much? >> NS-RAW: carrier phase raw measurement GPS receiver, max 5Hz update rate, RTKLIB supported S1315F-RAW in the form of plug-and-play NavSpark
- jlgaddis 13y agoYep, even WAAS is only considered to be accurate to 3m, IIRC.
- fr0sty 13y agoAccording to the wikipedia page on WAAS[0], regular GPS is accurate (95% of measurements) < 2.5m horizontal and with WAAS is is .9m horizontal. There is also an FAA graph of GPS measurement accuracy[1] which I'm guessing is the source of various "accurate to 2.2m" claims I have seen. [0]http://en.wikipedia.org/wiki/Wide_Area_Augmentation_System#Comparison_of_accuracy http://en.wikipedia.org/wiki/Wide_Area_Augmentation_System#C... [1]http://www.gps.gov/systems/gps/performance/accuracy/histogram.png http://www.gps.gov/systems/gps/performance/accuracy/histogra...