Method for judging flight route deviation

Abstract

The invention discloses a method for judging flight route deviation and relates to an application technique for judging air route deviation in the route planning field. The method is characterized in that, according a transformation relation between terrestrial coordinates and space rectangular coordinates, the terrestrial coordinates of the current position point of an aircraft and the terrestrial coordinates of the route position point of the aircraft are transformed into the space rectangular coordinates, the coordinates of a position of a route which is closest to the current position point are calculated section by section by adopting a three-dimensional solid geometrical algorithm, the coordinates of the position which is closest to the current position point are inversely transformed into the terrestrial coordinates, and then whether the deviation is within an allowable route deviation range or not is judged by calculating the horizontal distance and the altitude difference between two terrestrial coordinate points. The method for judging the flight route deviation has the characteristics of precise algorithm, rapid judging speed, small error, stable and reliable performance and the like, and is particularly suitable for application fields of air route deviation alarm, flight navigation and monitoring, airspace management and the like.

Description

technical field [0001] The invention relates to a method for judging flight route deviation in the field of route planning, and is particularly suitable for application fields such as air route deviation alarm, flight navigation and monitoring, and airspace management. Background technique [0002] With the development of technology, the number of aerial vehicles is increasing rapidly, and airspace management and flight monitoring are becoming more and more important, requiring each aircraft to fly along the planned route. Therefore, the route deviation warning is an important consideration. The location point and route coordinates are generally geodetic coordinates, and the units between the coordinates (the longitude and latitude are in degrees, and the altitude is in meters) are not uniform, so they cannot be directly used for calculation. At present, the air route deviation judgment method mostly adopts a method similar to the ground yaw judgment method, and the air rou...

AI Technical Summary

Problems solved by technology

The first method involves a large calculation error when the route crosses the Gaussian zone, and it is easy to cause false alarms, and the altitude deviation needs to be calculated separately. The second method is suitable for special situations when performing emergency tasks, and it is difficult to popularize and apply

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