Real Time Surveillance System Based On ADS-B Multi Ground Station

With the rapid development of civil aviation industry,the traffic density is increased due to the growing route traffic and aviation throughput.The establishment of rader is influenced by the terrain factors,desert,ocean areas and remote areas will become blind area of radar.At the same time,with low-altitude airspace's opening in recent years,the general aviation develops rapidly,but there is short of the corresponding air control facilities such as low-level communication equipment and radar.Therefore the traditional monitoring methods can not meet the needs of air traffic control and aviation safety.As one of the most important means of civil aviation surveillance,ADS-B is widely used in the world.Speeding up the popularization and application of ADS-B is an importment mission for our country to stride forword civil aviation power and develop a new generation of air transport system.A real-time monitoring system based on ADS-B multi ground stations is designed,taking the dispersive ground station as data source,thus obtaining the monitoring data of blind area to achieve real-time traffic monitoring.The research content mainly includes the following parts.First of all,achieve processing of monitoring data of a single ground station,containing receiving,pretrement and analysis of the ADS-B data.Then study on data transmission in Wan,achieve ADS-B data transmission from the remote ground stations to the terminal area.Aiming at the ADS-B data dropouts,a position/speed hybrid filter method is proposed based on the variable dimension Kalman filter for the S Mode ADS-B data,which position message and the velocity message sent at different time.The algorithm is used to process the aggregated data,thus generating the track information.Finally,design the display module,realizing two display function: real-time track display of multi-faceted station;historical track playback function for single plane.