Differential GPS

The States of Jersey operate Differential GPS service for the benefit of local architects, surveyors and utility companies

The States of Jersey GDS Differential GPS Base Station is now fully operational and is transmitting correction data to subscribers of the service.

Leica Geosystems DGPS systems

Digimap are the local agents for Leica Differential GPS systems and Total Stations. In particular, Digimap specialise in the new SmartRover system and have sold a number of these systems this year.

Cable free, exceptionally lightweight and fully compatible with Leica SmartStation, the new RTK GPS Leica SmartRover presents itself as the ideal tool for modern surveying.

SmartRover is the lightest cable-free RTK GPS system in the world and is fully compatible with Leica SmartStation, the world’s first total station with integrated GPS. Use SmartStation to position your total station and then transfer the SmartAntenna and continue RTK GPS surveying with the SmartRover. Enjoy outstanding performance at a fraction of the weight of current all-on-the-pole systems. Reduce operator fatigue and maximize productivity.

Consisting of the Leica SmartAntenna ATX1230 and the Leica RX1250 Controller, the Leica SmartRover delivers complete cable free operation to provide maximum flexibility with fewer components. Weighing only 2.8 kg, the Leica SmartRover reduces operator fatigue and maximizes productivity.

Easier and faster with outstanding performance
The new Leica RX1250 Controller includes Windows CE and BluetoothTM wireless technologies. This facilitates direct contact to the office via the Internet to upload/download data to enhance survey productivity. With its integrated CF-card, data can be seamlessly exchanged with Leica System 1200 instruments to provide full X-Function compatibility. Furthermore, Leica SmartRover includes the proven SmartTrack and SmartCheck technologies that deliver the best GPS results with speed and reliability. Leica SmartRover is the perfect companion for demanding tasks.

• All-on-the-pole convenience
• Weighs only 2.8 kg
• Full compatibility with SmartStation
• WinCE and Bluetooth™ wireless technology
• Best GPS result with SmartTrack and SmartCheck
• MIL spec ruggedness
• Your perfect companion for demanding tasks

Digimap (Jersey) Ltd has purchased a number of Leica Differential GPS (DGPS) high precision Rover data collection units and these are now available for hire.

The equipment is pre-configured to use the States of Jersey's GIS DGPS Base Station which transmits corrections every second. This allows real time collection of data. It is also pre configured to work with the Jersey Grid to provide 100% compatibility with the Survey of Jersey and the paper and Digital Maps.

The Differential GPS equipment is accurate to approaching +/- 1cm in the horizontal axis and 2cm in the vertical axis.

The Package

The package provided includes:

• High precision Leica SR530 DGPS Rover unit
• Data capture logger
• Radio Receiver for encrypted Differential corrections
• Use of Repeaters
• License to use the States of Guernsey Differential GPS Base Station

Prices

The rental costs are as follows:

Daily rental £195 per day or weekend
Weekly rental £675 per week
Monthly rental £1,750 a month
Minimum Charge £125 for half a day

Systems may be hired on a longer-term basis or permanently. They are also available for lease and purchase if this is of interest.

We are keen to discuss special rates with anyone who is interested in committing to a minimum usage each year, even though you may only require it a day or week at a time.

Training

One-day hands on courses will be run once a month at a cost of £250 per person. Please contact Digimap on 01534 769069 or look at our Training pages if you are interested.

Data Collection with DGPS

DGPS is here. The GDS Differential GPS Base Station has now been established and is transmitting differential corrections for use by subscribers of the service.

Using this technology you can now capture the position of an object, or asset to an accuracy of +/- 1cm in plan position and 2.5cm in height, and all at the touch of a button.

Although DGPS is not the answer to all positioning problems (it works where there is a clear view of the sky), we believe that for many applications, it will provide a highly effective means of data collection.

A typical scenario could be a utility asset surveyor, collecting position and attribute data of services uncovered in a trial trench. Using the DGPS system the surveyor would:

Collect the position, orientation, depth, and detail of the services found - directly into a hand held data logger, Palm or Laptop computer.

Not have to make a sketch of the locality - because the position data given by the DGPS is directly compatible with the Guernsey mapping.
Be able to accomplish the work accurately, quickly, in any weather, and by one person with minimal training.