Accuracy of RTK and RTX GPS

Summary Horizontal Accuracy:
RTK: 2.5cm
RTX: 4 cm

We would not recommend using RTX or similar correction signals for survey as they would likely cost you a lot in extra earth moved because the design will not be correct.

For machine control, we would not recommend also as you will be 'chasing your tail' trying to get the earthworks to balance and you will end up with an inferior finish that will not drain well.


COMPARISON OF POSITIONAL ACCURACY BETWEEN RTK AND RTX GNSS BASED ON THE AUTONOMOUS AGRICULTURAL VEHICLES UNDER FIELD CONDITIONS

ABSTRACT. Currently, many systems (machine vision, high resolution remote sensing, global positioning systems, and odometry techniques) have been integrated into agricultural equipment to increase the efficiency, productivity, and safety of the individual in all field activities. This study focused upon assessing a satellite-based localization solution used in straight path guidance of an autonomous vehicle developed for agricultural applications. The autonomous agricultural vehicle was designed and constructed under RHEA (Robot fleets for highly effective agriculture and forestry management) project and is part of a three-unit fleet of similar vehicles. Static tests showed that 99% of all positions are placed within a circle with a 2.9 cm radius centered at the geo-position using real-time satellite corrections (RTX). Dynamic tests between rows demonstrated a mean (N=610) of the standard deviation for real-time base station corrections (RTK) of 1.43 cm and for real-time satellite corrections (RTX) of 2.55 cm. These results demonstrate that the tractor was able to track each straight line with high degree of accuracy. The integration of a Global Navigation Satellite System (GNSS) with sensors
(e.g., inertial sensor, altimeters, odometers, etc.) within the vehicle showed the potential of autonomous tractors for expanding agricultural applications utilizing this technology.

Keywords. Autonomous tractor, GNSS, Precision agriculture, RTK-GPS, Agricultural machinery.

Comparison of positional accuracy between RTK and RTX GNSS gased on the autonomous agricultural vehicles under field conditions (PDF Download Available).
Available from: https://www.researchgate.net/publication/266956117_Comparison_of_positional_accuracy_between_RTK_and_RTX_GNSS_gased_on_the_autonomous_agricultural_vehicles_under_field_conditions [accessed Jul 11, 2017].

General

  1. Virtual Reference Station (VRS) for OptiSurface Landform
  2. Accuracy of RTK and RTX GPS
  3. Export To Field Level .gps File From UTM Coordinate System
  4. How Often Does The Earthworks Need To Be Done?
  5. GPS Accuracy Affected by Solar Activities
  6. Is OptiSurface Compatible with John Deere?
  7. Is GPS Accurate Compared to Laser?
  8. Is Cellular RTK Networks Accurate Enough for GPS Landforming?
  9. Trimble FMX User Guide
  10. Effects of Topsoil Removal and Redistribution on Irrigated Crop Production
  11. OptiSurface Designer on Apple Computer
  12. Earthworks Conversion Chart (Metric to Imperial) & Planar/OptiSurface Comparison
  13. How to Check Your System Specification
  14. OptiSurface Designer and John Deere's APEX
  15. Designs Generated with OptiSurface Designer
  16. Legend Way Off Screen
  17. Computer Only Running at 30% of the CPU Capacity
  18. French Manual for OptiSurface Designer
  19. Introduction to OptiSurface Landforming
  20. Using the Lay of the Land to Let Water Drain From A Field
  21. The Benefits by Using OptiSurface Design Software
  22. Draining Surface Water Using OptiSurface Designer
  23. Difference Between OptiSurface Designer Software and the Trimble and Deere Solutions
  24. OptiSurface and Auto-steer GPS: Key to Cost-Effective Erosion Control
  25. 800ha OptiSurfaced for Lateral Move and Drip Irrigation
  26. The Disadvantage of Practicing Multiple Grade Designs
  27. Why You Don't Want Ditches in Your Field...
  28. Connecting Pot Holes to Drains
  29. Dongle Or Licensing System
  30. OptiSurface Designer System Requirements
  31. Hardware List Providing the Best Service and Getting the Most out of OptiSurface Designer
  32. Computer Operating Systems
  33. One or Two Scrapers
  34. Base Station Mobility
  35. Base Unit Distance with GPS Receivers On Scrappers
  36. Getting the Information to the GPS Units on the Scrapers in the Field
  37. Downloading Maps to the Equipment / Machine
  38. Implementing Designs for the Field
  39. What Machine Control Hardware is OptiSurface Designer Compatible With?
  40. Base Station and Line of Sight with the Scrapers
  41. One Base Station with Multiple Scrapers
  42. Training Topics
  43. Two Legends Visible
  44. Auto-Backup Files
  45. Speed Up the Display Graphics (eg Zooming and Panning)

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