We’re pleased to release our new GPS jamming map tool. The new map allows users to view areas of GPS jamming and interference around the world in an easy to understand visual format.
As part of the ADS-B messages we receive from each aircraft, the Navigation integrity category (NIC) encodes the quality and consistency of navigational data received by the aircraft. The NIC value informs how certain the aircraft is of its position by providing a radius of uncertainty. The larger the radius value, the less certain the position update. We use the NIC values broadcast by aircraft passing through a particular area over time to calculate GPS jamming and interference.
Jamming and interference can be displayed in a resolution of six (6) hours or 24 hours. Six hour resolution will show the most recent activity, while 24 hour resolution provides a broader perspective for the previous day.
At the moment, GPS jamming is calculated only using using data from areas where there are an adequate number of flights and where there are an adequate number of Flightradar24 terrestrial ADS-B receivers. We are working on incorporating additional sources of data in the near future to further enhance the map.
