Decodio Localizer (Direction Finding Solution)

Decodio Localizer is an emitter-localization solution that is based on both “time difference of arrival” (TDoA) and “angle of arrival” (AoA). Decodio is also able to build hybrid solutions based on available DF systems in combination with TDoA. Decodio Localizer provides real-time estimations of the location of a signal source by cross-correlating the incoming signals provided by distributed acquisition stations. Several DECODIO ReX instances are used as sensors for the Decodio TDoA system. They are responsible for the reception of a wideband signal and the extraction of the narrowband signal of interest. These extracted signals are streamed via a network to the central station. Several network techniques ranging from LTE through microwave links to private LAN networks can be used to connect the sensor sites to the central station running DECODIO Localizer . The update rate is automatically adapted to the available data rate in the network. The central application DECODIO Localizer is responsible for controlling the remote sites. There is no need for manual parameter-setting at these sites. The data streams that are received are aligned, including through energy-/burst-detection, and the possible location of the emitter is estimated. On the basis of several measurements, a heatmap is superimposed on a map. Besides openstreetmap, other types of maps can be used as display sources. Using DECODIO ReX and DECODIO Localizer , emitter localization systems of different sizes and with different capabilities can be built. These start from small systems with three sensors and only one narrowband channel, ranging up to multi-site systems with more than 30 sensors, several narrowband channels and additional PMR-decoding support which can be monitored from different workplaces.