Overview
- Collects and sets out to less than one metre
- Use in the remotest areas, no base station to set up
- It is a neat on-the-belt handheld data collection system using Bluetooth, no cable
Hire this sub-metre data collector with graphics, code lists and attributing from $650 per week + GST.
The new graphical GIS data collection system from Leica
The Leica GS20 collects and sets out to less than one metre. It is a neat on-the-belt handheld data collection system using Bluetooth, no cable. You can use it real-time, with or without DGPS. (Available worldwide, incl. PNG, Indonesia, SE Asia, China, India etc ).Use in the remotest areas, no base station to set up. Perfect for preliminary surveys.
The hand-held unit is a cable free operation, all batteries and DGPS components are on the belt. The hand-held receives DGPS messages by Bluetooth. You can also use one or two GS20 handhelds for cm accuracies using computer post-processing.
Collect lines, points, or polygons to half-metre acuracy. Break into any collection sequence, to collect other types of data. Add attributes with multiple features. The codelist system allows you to design your own collection requirements, and gives the user mandatory or pick-list inputs. Recording or setting out data is easily handled by new users. You can collect hundreds of points in a few hours. You can set out or locate assets as waypoints, or set out lines (or offset lines) defined by two known points, from current position to a known point, or by bearing away from a known point.
Integrates field survey information perfectly with Arcview, Mapino, Autocad, or other drafting and GIS computer systems. Comes complete with graphical software GISDataPRO for project control.
A comprehensive computer office suite, Leica GIS DataPro for graphical download of data and conversion to DXF, Arcview/Mapinfo formats can be included. The native format for the GS20 data is the ESRI .shp file.
An overview of the keyboard and screen, along with the first menu.
GS20 features:
- Enhanced for field use by a large graphical display to show collected point and line information clearly
- Ability to prompt the user for mandatory or multi-choice inputs, sensitive to point or line types
- Back load points or lines from GIS for guidance or field verification
- Flexible field methods- lines, points, areas - pause and resume function easily interrupts current method to pick up others
- Comprehensive editing, datum, and configuration functions
- Standard CF memory cards for easy data handling
- Store data for computer post-processing to cm level accuracies (requires optional process software)
There are three real time systems available to GS20 users for DGPS,
to an accuracy of 0.4 metres. See further below for post-processed options.
1.
DGPS using beacons such as the Australian AMSA (covers much of Australia's coastline and 300km inland), or the US Coast Guard (in the USA). This is called the RTB set.
2.
DGPS using satellite differential signal from
Omnistar. This is called the RTS set. This has world-wide coverage, including Australia, PNG, Indonesia, SE Asia, China, India etc. Use in the remotest areas, no base station to set up. Perfect for preliminary surveys. The backpack holds batteries, Omnistar receiver, mini-pole and DGPS antenna, and bluetooth transmitter. The handheld unit has no physical connection to the belt, so eliminating cable problems. Perfect for geology, geotechnical, engineering, asset management and all sorts of position data requirements. This is called the RTS set.
3.
DGPS using a local RTCM transmitter. Many mining companies and other utilities already have RTK GPS sytems that transmit a DGPS signal. The GS20 will fit perfectly in these situations for quick geological, or civil engineering pickup.
Post-processing data in a computer is also a DGPS option. Accuracy will depend on method.
1.
You can collect data in Leica or Rinex format for post-processing by computer, with base station data. This is normally for code L1 data, to around 0.3 metres. Occupation times on each point, is 2-5 minutes, to ensure most productive data, as there is no way of knowing position accuracy until after process. Base station data can be purchased from a third party supplier (usually government or university facilities), or using a second Leica unit to log corrections at a known point.
2.
Collected data can include phase data for cm level accuracy. Elevations of less than 50mm will be normal, but the occupation time of 20-30 minutes will be mandatory for each point. Base station data can be purchased from a third party supplier (usually government or university facilities), or using a second Leica unit to log corrections at a known point. This method requires an additional software module for
GIS Data Pro.
You can always use the GS20 as a standalone data collector for 3-4 metre accuracy.