Drone-based RF Interference Hunting System Helps Meteorological Radar Station Locate Radio Interference
Echo pictures, graphs and data of weather phenomena acquired by radar detection are important basis for short-term (0-72 hours) and very short-term (0-12 hours) weather forecasts, especially precipitation forecast, and they are the major tools for near (0-2 hours) weather forecast service. A meteorological bureau found that its radar cloud image was affected by ray-shaped interference from time to time in directions of 350° and 280-300°, which seriously deteriorate the normal service operation.
Hocell Drone-based RF Interference Hunting System was applied to do clear frequency test within 2km, and a weak stray interference source was detected and located 600m away. Pictures were taken by the drone as evidence.
The interfering signal was from ATC (Air Traffic Control) radar, with a frequency difference of 5MHz and power of -41dBm when reaching the weather radar antenna. The test showed that it could pass the filter of weather radar.