30 Sep '17, 3pm

Adventures in Science with @ShawnHymel : How GPS actually works!

SparkFun should look at investing in an RTK base permanently located at your facility with a transmit only 2.4Ghz radio signal. AVC competitor could invest in a single frequency L1 RTK system and receiving radio. L1 typically takes a few minutes to reach Fixed Mode but once it’s there, participants will have cm level accuracy all around the track. Hemisphere GPS probably has the least expensive single frequency RTK system on the market and there are some Chinese knock offs that are fairly reasonably priced. If the base is Hemisphere, for example, then the rovers would all have to be Hemisphere too. There is the CMR correction string that can be transmitted that from most any Base and that can be received as a correction string by many branded receivers out there.

Full article: https://www.sparkfun.com/news/2442

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