GPS network

The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS. Satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the user's exact location.

Base station

With RTK, you need a base station placed on a known, surveyed point, and one or more mobile receivers within a 10-kilometer range of your base station. Corrections are transmitted via radio to the mobile receivers in the field. Data is transmitted in a dual-frequency data format called Compact Measurement Record.

Steering sensor

The steering sensor measures highly accurate wheel angle information on all terrain. This steering sensor from Trimble (AgGPS AutoSense) obtains information, without the use of moving parts or linkage, and continually sends that information to the navigation controller.

Vehicle interface

The vehicle interface receives navigation commands from the NavController, which controls the vehicle's steering when engaged. (The AgGPS Autopilot system supports ISO 11783, fly-by-wire, factory auto guidance components, or hydraulic control valves).

Monitor

Display monitors feature a large touch screen to make it easy to monitor and control each of your precision operations from one display. All data is saved on a removable data card, which can then be plugged into your computer for more accurate recordkeeping. Full color screens vary in size from 10.4 inches and larger. (Pictured above is Trimble's FmX Integrated Display).

Receiver

This all-in-one smart antenna is ruggedly built and designed for use with WAAS (6- to 8-inch accuracy), OmniSTAR HP (2- to 4-inch accuracy), OmniStar XP (3- to 5-inch accuracy), or RTK (1-inch accuracy) corrections.

Navigation controller

The NavController II will plug and play into most guidance-ready vehicles. Controller sends T3 terrain-compensated corrections and precise steering instructions to the tractor by using guidance and GPS information for a true on-ground position.