APS undertake a full range of topographic and earthwork surveys. Surveys are undertaken with a Global Positioning System (GPS) which allows detailed geo-referenced data to be gathered and transferred easily and accurately to base maps for a variety of archaeological and other uses.
Archaeological GPS applications include:
- trench stake out - targeting geophysical anomalies or features plotted from aerial photographs or previous surveys;
- artefact plotting - accurate 3D plots of field-walking finds or artefacts retrieved during excavation;
- specialist site identification - additional use of metal detectors to locate areas of specific period interest e.g. battle skirmishes or aircraft crash sites;
- topographic surveys - allowing detailed analysis of a terrain to provide contour and earthwork surveys;
- grid and transect set out - site or field-walking grids and transects accurately laid out on pre-determined points;
- pre and post excavation planning - accurate planning in real time allowing site plans to be instantly viewed onscreen, and
- establishing survey control points - providing permanent references for future surveys eliminating the need to reference successive surveys.