Research On Separation Theory During VSA Approaching On Parallel Runways

With the rapid development of the civil aviation industry and the rapid increase in air traffic,airports with parallel runways have chosen to alleviate the pressure caused by the increase in traffic by means of parallel approaches.VSA is a surveillance application based on ADS-B IN surveillance information,which is used to improve the awareness of air traffic scenarios of aircraft pilots through CDTI assistance,so that aircraft pilots can maintain visual interval for approaching.The main contents of this thesis are as follows.Firstly,the parallel approach mode is studied,and different parallel approach mode Separation criteria are analysed.The basic working principle of ADS-B and the principle of VSA surveillance application are introduced,and the VSA surveillance application is analysed and explained.Then,the ADS-B data processing process is analysed and the ADS-B data coordinate system conversion algorithm is investigated,combined with the aircraft motion model in the approach phase for filtering.The safety zone of the parallel approach phase is planned,and a parallel approach conflict detection method based on ADS-B IN data is proposed.The simulation results show that the traffic situation around the aircraft can be correctly sensed and the conflict detected based on the ADS-B information.Finally,a probabilistic approach to the VSA parallel approach interval is investigated.The effect of the VSA system error on the aircraft position is studied,and a collision probability model for the lateral,longitudinal and vertical directions of the parallel approach is established,and the collision probability of two aircraft is calculated using Matlab.The effect of surveillance error on the parallel approach interval is analysed,and the effect of surveillance position error,surveillance speed error and flight technology error on the parallel approach interval is derived.