Mid-air collision risk model based on the different route configuration

The flow increasing of civil aviation requires reducing the separation minima to improve the usability of the airspace, and then we attempt to evaluate the safety of the reduced separation minima so as to ensure the flight safety. This article includes a detailed analysis of the collision risk on the parallel route and intersecting route, and emphasizes on building the united collision risk model applied to arbitrary routes. To validate the new model practical, we assume the parameters of parallel routes and intersecting routes to measure the collision risk, and compare them with the results from the old collision risk models. The results suggest that the united collision risk model is applicable to arbitrary route configuration and indicate that the collision risk of the given routes as examples meet the target level of safety.