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Machine Control GPS
How GPS Works : GPS Machine Control : GPS Benefits : GPS Costs & Parts
GPS Machine Control Home

GPS Info:
What is GPS
How GPS Works
GPS Systems Accuracy
- US GPS
- Soviet GLONASS
- EU Galileo
- Why GPS, GLONASS & Galileo

Machine Control GPS:
How GPS Machine Control Works
- Base Stations intro
- Radio Base Stations
- GPS and RTK accuracy
- GPS + Laser = MM Accuracy
- GPS + Cell = 1200+ Sq Miles
- GPS on Machines
- GPS Control Boxes/Computers
- GPS Automate Vs. Indicate

GPS System Benefits:
GPS Machine Control Benefits
- Billing Controls
- Data and Management
- Job Management
- Move Dirt 1 Time!
- Many Machines

GPS Parts, Prices, and More:
GPS Machine Control Parts & Cost
- Pricing Automate vs Indicate
- GPS for Graders
- GPS for Dozers
- GPS for Blades
- GPS for Scrapers
- GPS for Excavators

Informative Grade Sites:
AccurateGrade.com
- Precision Grading Practices

LowCostMachineControl.com
- Laser Machine Systems

Sponsors:
Rocky Mtn Lasers
Construction Lasers


Construction Directory

GPS Electronics on Machines

GPS Electronics are by nature delicate. The GPS receiver is required to determine the time and read coordinate signals. The computers connected to the receivers are required to calculate thousands of times a second. By contrast the machine itself is not stationary, slamming into tons of aggregate repeatedly, and vibrating violently. No wonder it has taken 30 years to perfect the art of combining the two. Below are three of the technologies that make the GPS and Construction Equipment integration possible. This website will not delve into connections, wiring and such, but we will go on to say that manufacturers like John Deere are going so far as to prewire new hardware for GPS systems INSIDE the frame to protect these connections in the future.

GPS Co-Op Tracking

GPS Co-Op Tracking allows you to go places and work accurately where no other receiver can. So what exactly is GPS Co Op tracking? The best way to explain it is with an example. Tracking a star at night using a pair of binoculars is pretty easy when sitting in one place. But, tracking the same star while you are driving across a bumpy road at 20 mph and passing through trees is nearly impossible. GPS Co-op tracking is a unique way to use the satellites with their extremely precise and predictable orbit (position) to look back at the moving GPS receiver and keep it in it’s field of view at all times, and when it disappears under tree’s or behind a building for a few seconds, to immediately pick it up when it reappears, hence the term co-op tracking. The receiver and satellites are co-operating to perform this advanced tracking capability.

GPS Satellite Fast Initial Acquisition
and GPS Satellite Re-Acquisition

When you first turn on your GPS receiver it must acquire, or find, the satellites. The new GPS systems have up to 40-channels with four correlaters per channel (40 x 4 = 160 nodes) that each act as a channel to help initially find the satellite signal. Compare this to ordinary GPS’ normal 24-channel receiver with no additional correlaters and it’s easy to figure out why the new GPS systems are up to 7 times faster at initial acquisition (40 x 4 = 160, 24 x 1 = 24 or 6 & 2/3 times faster)! Should your GPS receiver ever lose it's signals due to shock, machine/human interference, trees, etc. it will re-acquire the signals within a second to allow workers to continue work seamlessly.

In-Band Interference Suppression

With the world of wireless communication growing rapidly, more and more opportunity for in-band interference of the GPS signal can occur. To keep that inference at bay, a unique In-Band Interference Suppression capability (up to 60db for U.S., up to 30db for international due to export control laws) was created. Just like other features, this expands the usable areas where GPS machine control receivers and rovers are able to work, opening otherwise closed environments to GPS.

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