The use of high density GPR arrays for large area geophysical survey
Channel: Recording Archaeology
Date: 2019-08-16

The application of vehicle towed high density Ground Penetrating Radar (GPR) arrays for investigating a range of archaeological sites and landscapes is becoming increasingly common, within both research and commercial applications. Such systems allow the collection of data from a series of 20 or more individual antenna elements, with a sub decimetre cross line spacing approaching Nyquist sampling limits, at rates of acquisition that come close to those achieved through magnetic survey
Whilst the resulting data can often provide high horizontal resolution and depth information, some significant challenges remain in terms of the technical deployment and subsequent data handling given the large volume of data acquired (approximately 10GB per hectare), which can not only rapidly fill field disk drives but can also be difficult to process in the field and present a challenge for subsequent interpretation, reporting and archiving.

Neil Linford (Historic England Geophysics Team)