Understand the Basics of GPS Guidance

GPS Guidance is a Comfort and Productivity InvestmentGPS Guidance helps farmers to enhance productivity and reduce costs. GPS Guidance solutions employ
satellite signals to accurately guide the tractor or combine, even in bad weather or dusty field conditions.
Each field operation has a GPS Guidance tailored solution for the best results.

GPS Guidance is a Matter of Repeatablity

The simple signal from a GPS satellite works well with car navigation systems but is not accurate enough for
precision farming operations, that need precision up to 2.5 cm.
Farming GPS Guidance is based on real time corrections of the GPS signal calculated either by a central control
station, a server or a movable ground radio station, and then sent to the GPS Guidance-enabled equipment.
GPS Guidance accuracy is calculated on pass-to-pass basis (relative accuracy measured at 15 minutes intervals)
and on year-to-year basis (capacity to repeat the same rows up to a week, a month, a year later).

Three Areas to be Considered

Three areas have to be considered when building a GPS guidance solution:
• The correction signal will determine:
– The accuracy of the GPS receiver, from 1 meter down to 2.5 cm.
– The repeatability of the path from one year to another.
– The cost of use of the solution, free or subscripton based.
• The steering system can be:
– Manual guidance.
– Assisted autoguidance.
– Integrated autoguidance.
• The display will grant the evolutivity of the system in terms of future upgrades:
– Compatible accuracy.
– Steering system.
– Implement monitoring and control.
– Compatibility with other manufacturers’ machines.
– Advanced operations capability.

Correctional Signal

Each field task needs a specific accuracy. NEW HOLLAND has a wide variety of solutions to cover all the situations.

Egnos, Rangepoint RTX or Centerpoint RTX

1 The machine with the antenna receives a GPS signal.
2 The ground base stations used by EGNOS, RangePoint RTX and
CenterPoint RTX receive the same GPS signal.
3 The ground base stations calculate the real time position error and send
this message to a geostationary satellite.
4 The geostationary satellite re-transmits this message to the machines’


ViewPoint RTX offers an affordable, entry-level correction service built on Trimble’s exclusive RTX technology, delivering
sub-meter, repeatable accuracy worldwide.


RangePoint RTX offers an accuracy of 15 cm and includes GLONASS satellites and GLONASS correction data in the
solution. Useful when faced with conditions that limit satellite visibility.


CenterPoint RTX offers an accuracy of 3.8 cm and includes GLONASS satellites and GLONASS correction data in the
solution. Useful when faced with conditions that limit satellite visibility.

Correctional Signal

RTK Corrections
Real Time Kinematic (RTK) is a highly precise technology that results in 2.5 cm year-to-year accuracy. This accuracy can be achieved with three communication technologies, depending upon the customer.

1 The base station is setup on a known position and receives raw data from
the satellites. The rover receives the same data.
2 By comparing the received position to its known actual position the real
time error can be calculated.
3 This error is then transmitted via UHF radio to the rover unit.
ACCURACY: base station <10 km from rover <2.5 cm absolute.

1 The Rover receives the raw data from the satellites.
2 The Rover sends its approximate position to the Central Processing
Facility (Data center) via GSM, GPRS, or 3G.
3 Data center predicts and calculates the best solution based on the
location of the rover by using multiple base station triangulations.
4 These corrections are transmitted to the rover unit by Internet GSM.
ACCURACY: based on the density of the base stations, <1.5cm and no
height control.
— New Holland is in control of own correction signal. Therefore, we can
guarantee the quality and reliability
— Higher accuracy and redundancy than any other RTK provider in Europe
— New Holland IH PRS (Pseudo Reference Station) technology is superior
towards the otherwise used VRS


xFill is a new technology designed to keep users operating during times of interruptions to RTK communications.
xFill positions are created using two information sources:
• Last known RTK point
• Clock and orbit corrections from the RTX satellite

• Up to 20 minutes extended coverage
• Global coverage area
• No convergence time/ seamless transition
• 3-15 cm accuracy over time

The xFill Premium service allows continued field operations during RTK/VRS signal interruptions, delivering Trimble RTX position accuracy for the duration of
the interruption. This service extends the Trimble standard xFill service, which is limited to 20 minutes.

Manual Guidance

GPS Manual Guidance Overview


  • Correction
    • RangePoint RTX or EGNOS.
  • Customer
    • New customer seeking a simple solution to improve their accuracy.
  • Applications
    • Spraying, spreading, rate and Section Control.
  • Machines
    • All brands, all machines.
    • Easy to use.
    • Portable from one machine to another.

Assisted Autoguidance


• EGNOS, RangePoint™ RTX, CenterPoint™ RTX, RTK.
• Customer looking to save money while improving their comfort and
increase productivity.
• Spraying, spreading, tillage, mowing, harvesting, seeding.
• Almost all brands and models of tractors and combines (EZ-Pilot™),
swathers and sprayers.
• Machine > 3 years or machine not compatible with integrated

• Portable from one machine to another (EZ-Steer®) or integrated in the
steering column (EZ-Pilot™).
• Increased productivity.
• Terrain compensation.

Integrated Autoguidance – Autopilot


• RangePoint™ RTX, CenterPoint™ RTX, RTK.
• Already operating a guidance display with assisted guidance or autoguidance but
looking for more functionality such as Flow and Application Control or Implement
• Large equipment operator.
• Spraying, spreading, tillage, mowing, harvesting, seeding, hoeing, mechanical
weeding, bed preparation, bed planting, row crop work.
• Almost all brands and models of tractors, swathers, sprayers
and combines compatible with autoguidance integration.
• Higher take rate on new machines and machines < 3 years.

• Significantly reduce costs.
• Portability of the main components.
• Terrain compensation.

Model Display