Detection of TID activity from ionogram virtual height variations

Travelling Ionospheric Disturbances (TIDs) constitute a specific phenomenon that can be excited by space weather or driven by other processes acting below the ionosphere. Independent of their source, the effects imposed by TIDs in the ionosphere are very detrimental to an array of user technologies. TechTIDE (http://techtide.space.noa.gr/) is a project funded by the European Commission Horizon 2020 research and innovation program that aspires to establish a pre-operational system to demonstrate reliability of a set of TID (Travelling Ionospheric Disturbances) detection methodologies to issue warnings of the occurrence of TIDs over the region extending from Europe to South Africa. One of these detection methodologies is based on the height-time-reflection intensity (HTI) methodology applied on Digisonde ionograms to infer TID activity over Digisonde stations. In this paper we describe the steps for the implementation of this technique in the frames of TechTIDE.