Development of a custom-built RTK-GNSS positioning system for agricultural operations
Laen...
Kuupäev
2023
Kättesaadav alates
Autorid
Lajunen, A.
Pietarinen, J.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
The objective of this research is to assess positioning accuracy of a custom-built RTK
(Real Time Kinematic) base station. Setting up a RTK base station with open-source tools is
rather straightforward process requiring only few components and basic programming skills. The
base station and receiver unit were developed by using a SparkFun GPS-RTK2 Board with
U-Blox ZED-F9P module. The board was paired with U-blox Multi band GNSS (Global
Navigation Satellite System) antenna. The board can use GNSS satellite signals from Galileo,
BeiDou, Glonass and GPS systems. The positioning accuracy was evaluated in a fixed position
and during operations in agricultural fields. The RTK correction signal was used in connection
with soil scanning measurements in different crop fields of the Viikki Research Farm of the
University of Helsinki. For accuracy assessment, comparative measurements were carried out
with a commercial network RTK (NRTK) correction signal. The vertical and horizontal accuracy
of the positioning signal were evaluated based on the accuracy variables calculated by the
receiver. The vertical accuracy was also evaluated by mapping the scanned trajectories on the
height map which was obtained from NSL (National Land Survey of Finland) open map data
service. The custom-built RTK positioning system accuracy was considered generally precise
enough for autonomous field work, but the reliability of the observed accuracy should be
confirmed with more extensive measurements. The commercial NRTK signal accuracy was
considered very good and reliable also for the vertical direction.
Kirjeldus
Received: February 1st, 2023 ; Accepted: June 16th, 2023 ; Published: July 6th, 2023 ;
Correspondence: antti.lajunen@helsinki.fi
Märksõnad
satellite navigation, positioning accuracy, real time kinematics, RTK-station, precision farming, articles