Download - Terrain Compensation for Guidance Systems - … Concept of Terrain Compensation Corrected position using Terrain Compensation. Uncorrected Position Roll Angle GPS Antenna

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Terrain Compensation for

Guidance Systems


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 …


Concept of Terrain Compensation

Corrected position using Terrain Compensation.

Uncorrected Position

Roll Angle

GPS Antenna


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


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


Various Terrain Compensation

Solutions

Cab mounted box containing inertial sensors

Image courtesy of Trimble

Integrated into GPS/GNSS receiver


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.


Improving producer profitability and

environmental stewardship.
