Evaluation of GPS Autoguidance Systems over Varying Time Periods

摘要: Autoguidance systems are becoming more popular to Alabama farmers for use in their cropping systems. Reported accuracies of available can be different from what the equipment operator experiences the field. Absolute accuracy any autoguidance system over a long period time, such as season season, is desirable especially when implementing management strategies controlled traffic. The objective this study was assess different auto-guidance systems, using WAAS RTK differential correction, various time periods. A non-GPS-based surveying practice used establish absolute equipment traverse during testing. This information then compute path deviations desired traverse. Average cross-track error and pass-to-pass were consistent with manufacturers’ recommendations overall study; however, drive paths deviated initial AB line established throughout study, represented by range or pass-to-pass error values. Average illustrated a deviation ±10 cm line over 15 week testing period. SF2 34 maximum path deviation 0.6 m. SF1 average 40 1.4 m, and WAAS averaged 24