RTK GPS: Difference between revisions
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Turnkey correction station: $700. https://www.sparkfun.com/products/22429 | Turnkey correction station: $700. https://www.sparkfun.com/products/22429 | ||
Bottom line: take 2 cheap GPS receivers, process them with open source RTKLIB but only for windows [https://www.rtklib.com/]. | |||
Linux version of RKTLIB - [https://rtklibexplorer.wordpress.com/2020/12/18/building-rtklib-code-in-linux/#:~:text=The%20original%20RTKLIB%20did%20not%20support%20Linux%20for,describe%20building%20these%20on%20the%20Ubuntu%20platform%20below.] | |||
=Basics= | =Basics= | ||
Revision as of 22:55, 10 August 2023
Howto
You can use a small computer + simple receiver with antenna to get cm accuracy GPS correction signals. Here is how to set up a reference station using a <$300 receiver + antenna. [1]. THis is good to 2 mm, with service degrading 1.5 cm every 10 km. So you can set up one, for a working region.
Can you do RTK correction in software, without the $300 receiver? Yes, a chip - $10 - but you need some basic stuff around the chip.
Turnkey correction station: $700. https://www.sparkfun.com/products/22429
Bottom line: take 2 cheap GPS receivers, process them with open source RTKLIB but only for windows [2].
Linux version of RKTLIB - [3]
Basics
- Up to 20 times per second update rate [4]
- Resolution drops to a few centimeters once base station is 10km from moving node [5].
- A Method of Satellite Navigation/Survey that utilizes one or more constellations, and a Base Station
- This allows for 1cm Level Accuracy
- Refresh Rate Typically Can Be ~1hz, but 20hz Models Exist (According to SparkFun, further looking around can be done if need be)
- Useful mainly for Surveying and Precise Remotely Operated / Autonomous Vehicles
- Low cost cm accuracy in GPS using GLNS module with android - [6]
How Are Boundaries Recorded
- There is a legal description like [Sec 32, T8N, R1E, E 1/2 of NW 1/4 Ex Com at NW Cor of Sd E 1/2 of NW 1/2, Th E Alg N Ln of Sec 140 ft, S Parl with N&S 1/4 Ln of Sec 311 Ft. W Parl With N Sec Ln 140 ft, N 311 Ft to Beg)] [7]
- Missouri has corner posts at all sections (mile squares) and at the quarter section (mid point between section corners) [8]