Need for a base station.
Need for a base station.
All the base stastion does, is to send out a correction signal by radiocommunication to all systems that listens on the frequency.
When the base station is set up, you have to configure it, that means tell it where it is.(you calculate the correction) This value is then sent out by radio.
The recievers in all the machines use this correction to correct the gps position to a exact position.
So if you get the correction signal or you have a known point you don't realy need a base station with the GPS systems in the machines.
That is if the system you are carrying is equiped correct.(rover or you have the handheld programming system at hand in your machine)
With the rover you can go to a known point and lay the exact grid into the system. The system then calculates the correction between the GPS signal and the known point you punched into the computer.(inside in the computer, without receiving it by radio):bash
This calculated correction is her in Norway correct for a radius of 5000 meters. 15 000 feet apr. (That radius differs with the number of satelites you reseive, and where in the world you are. Sattelite coverage)
If you move further away you need a new fixed point, and need to do a new correction calculation inside your system.
In Norway you can pay for correction signals over the cell phone network.
The rover is then connected to a "cell phone" and talks to a database over the phonenetwork, receiving the correction data.
This means you can be anywhere, have no fixed point and reseve the correction over the cell phone. The database knows where the phone network antennas is located, and thereby the "area" you are in. And then the correction.
The same applyes to the machine unit. If you take the machine to a known point and puts the end of the blade on it, and tells it where it is it will calculate the correction value. This is then valuable inside the 15 000 feet radius.
Of course this technique is not a smart thing, when you have 10-30 machines on the field...
Smarter to put out a base stastion.:drinkup