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Oakes Surveys Leica GPS 1200 fleet is the solution to your large scale mapping projects.

Using GPS and GLONASS combined in Real Time Kinematic (RTK) mode is the solution for many aspects of Land Survey including:

Greenfield Sites
Brownfield Sites
Quarries
Route Surveys
Stock Volumes
GIS Surveys
Borehole Location
Setting Out
Large scale monitoring

The "Base Station" and a "Rover" unit allows a surveyor to measure 4 square kilometres from 1 Setup. Our GPRS mobile GPS technology allows unlimited GPS roving depending on signal. This provides the client with more survey data from 1 day on site than traditional methods.

GPS is also used in Static mode to provide High Order Survey Control Networks to the standard of a full traverse method. This is especially relevant for long distance route surveys, where a traditional traverse method is impossible.

If you require a Survey Quotation, please utilise the Survey Specification Form.

For your information:

The Ordnance Survey National GPS Network

GPS is the standard tool for precise surveying and mapping, used for all Ordnance Survey precise surveying work. Some characteristics of GPS as a surveying tool are:

• GPS is a three-dimensional positioning system: a precise GPS fix yields latitude, longitude and ellipsoid height.
• The highest precision of GPS positions is around the 1mm level horizontally relative to a global datum. To achieve this requires networks of permanently installed GPS receivers. Typical field GPS survey gives accuracies of a few centimetres relative to a global datum. Vertical position quality is generally about 2.5 times worse than horizontal.
• GPS is a purely geometric positioning tool that is, GPS coordinates do not give you any information in relation to level surfaces, only in relation to the geometric elements of coordinate system axes and ellipsoid. For this reason GPS does not give orthometric height information.
• GPS does not require intervisibility between ground reference points; neither is the geometric arrangement of the ground network crucial to the results as it is in theodolite triangulation survey.
• With care, GPS can be used very accurately for terrestrial survey over any distance - even between points on opposite sides of the world. For this reason, global datums are used for GPS positioning. This feature makes GPS vastly more powerful than traditional survey techniques.

Ordnance Survey Control

The method of relating a survey to Ordnance Survey National Grid is now solely with GPS using the Ordnance Survey Active GPS Network. This makes it easy to convert spatial datasets held in GPS latitude and longitude format to National Grid Eastings and Northings with high accuracy, using the OS national standard precise transformation. This method has replaced the use of Trig Pillars and Bench Marks due to their inaccuracies.


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