Research on positioning accuracy of low cost real time kinematic-global positioning system (RTK-GPS)
For the purpose of practical application of farmland navigation, we constructed a system of real time kinematic (RTK) to study its positioning accuracy mainly based on Piksi positioning module of Swift Company in the United States. The results showed that single Piksi module point positioning accura...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2018-07-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2018.07.021 |
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| Summary: | For the purpose of practical application of farmland navigation, we constructed a system of real time kinematic (RTK) to study its positioning accuracy mainly based on Piksi positioning module of Swift Company in the United States. The results showed that single Piksi module point positioning accuracy [root mean square error by two folds (2DRMSE), with 95% degree of confidence] was about 8 m, and the RTK static accuracy (2DRMSE, 95%) was about 1.5 cm. The design of dynamic dual-track experiment verified the feasibility of using line fitting method for dynamic linear accuracy: When the flow station was linearly moving at an average speed of 0.4 m/s to 2.3 m/s, the positioning accuracy obtained by fitting was about 1.5 cm. According to the difference between the distance of measured point to the fitting center and the fitting radius, we evaluated the positioning accuracy of the circular motion, and found the accuracy of linear motion at 0.4-1.6 m/s was also about 1.5 cm. Considering the point- to- point problem in the actual application process, the measurement error obtained by the fitting analysis was small and the true dynamic accuracy of Piksi RTK was about 3-5 cm after a preliminary judgment. It is suggested that the low cost RTK-GPS can meet the actual needs of agriculture. |
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| ISSN: | 1008-9209 2097-5155 |