Terrain Compensation for Guidance Systems - … Concept of Terrain Compensation Corrected position...
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www.AlabamaPrecisionAgOnline.com Terrain Compensation for Guidance Systems
Transcript of Terrain Compensation for Guidance Systems - … Concept of Terrain Compensation Corrected position...
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Terrain Compensation for
Guidance Systems
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As vehicle pitches and rolls, so does the GPS/GNSS antenna or receiver
How does a guidance system compensate for position errors caused by a moving antenna?
For Rolling Terrain …
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Concept of Terrain Compensation
Corrected position using Terrain Compensation.
Uncorrected Position
Roll Angle
GPS Antenna
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Pitch – change in elevation between front and rear wheels
Yaw – any sliding or turning motion to the left or right
Roll – change in elevation between left and right side
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Company Offerings…
Manufacturer Terrain Compensation System
----- Correction -----
Roll Pitch Yaw
Autofarm ParaDyme™ X X X
John Deere iTC; Terrain Compensation Module X X
Raven 3D Terrain Compensation X X X
Mid-Tech Tilt Compensation Module X
Topcon 150 System X X
AGI-3 Receiver X X X
Trimble T2 X X
T3 X X X
Inertial Sensors – combination of accelerometers and gyroscopes July, 2010
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Various Terrain Compensation
Solutions
Cab mounted box containing inertial sensors
Image courtesy of Trimble
Integrated into GPS/GNSS receiver
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Purchase Considerations
• Check with guidance manufacturer
– Add-on component
– Included with purchase
• Recommend terrain compensation for rolling terrain and extremely sloped land.
– At least compensation for Roll for even simple guidance systems
– Peanut digging under these conditions plus terraces = 3-D compensation.
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Improving producer profitability and
environmental stewardship.
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