Progress in Mitigation of WLAN Interferences at Weather Radar

Artificial radio interferences frequently contaminate weather radar observations. In particular, the wireless/radio local area networks (WLAN/ RLAN) based on spread spectrum techniques affect notably the data quality. These networks are widely used co-existing in traditional frequency bands of weather radars, and occasionally they do not meet the specifications of dynamic frequency selection (DFS).

The characteristics of typical WLAN signals are evaluated in controlled conditions, and features are identified which may define a robust basis for their mitigation. Methodology is applied, configurable to the desired strength of mitigation of WLAN with known impacts on the weather signal. The performance is evaluated in real weather radar conditions, using C-band radar observations at operational radars.