During February and August 2016 International partners from the UK and Holland undertook ground-truthing research to establish the similarity between what the tree radar sees as roots, how we interpret those results, and then, having removed the soil, how those results are reflected in reality in relation to the number and distribution of tree roots. The results were very positive and the data gathered has been transferred to the developer of TreeRadar to help improve their data set in the search for the answer of how to measure root diameter remotely. Papers and results from both research trips can be found by following this link http://sharonhosegoodassociates.co.uk/ground-truthing-tree-radar/
We have provided a number of events and demonstrations of Tree Radar for the Ancient Tree Forum, using the Tree Radar to show how much further the roots of ancient trees can extend beyond the nominal Root Protection Areas (as described in BS 5837 2012: Trees in relation to design demolition and construction' Recommendations). During demonstrations at Burghley House and at Westonbirt Arboretum Tree Radar scans were undertaken out beyond 22m from the tree, with large numbers of roots still being detected. Scanning at this distance only stopped due to the proximity of other trees beginning to interfere with that of the subject trees.
On Friday 4th May 2018 we had the great opportunity to use the Tree Radar to undertake scanning on the rooting area around the famous 'Major Oak' in Sherwood forest on behalf of the RSPB who manage the site. The outcome of the results will form part of the long term management plan to help preserve this historic tree.