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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 Machine Control Base Stations

Why do I need a base station?
Why shouldn't I just use one GPS receiver for construction?
Why do GPS systems get to use 1 base for multiple machines?

These, and many similar questions, are answered in a simple phrase.....
'I need more information (data) to answer that questions!' Or More mathematical equations = better accuracy.

We know that the military institutions that run the satellites send error correcting information to their own receivers to make them accurate anywhere on the planet. This information, protected for national security, can be replicated on a local level to improve accuracy.

Even with the latest Initial Acquisition and availability systems, it takes some time to wade through the errors to a known point (gps accuracy). Just the signal acquisition is a daunting task (See Below), but error correction takes upward to 30 minutes. After the base station knows where it is, it can send the error corrections to the other GPS receivers in range and thereby replicate the accuracy the military receives.

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.

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GPS and Machine Control © 2007     Design by:Broomfield Designers
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