A head-up display isometric runway symbol drawing method

Abstract

The present invention relates to a head-up display equiangular runway symbol drawing method. According to the method, firstly the gliding deviation of an aircraft relative to a standard glide slope, a course deviation, an airport altitude, a set glide slope angle, a glide station coordinate, a course station coordinate, and aircraft atmospheric altitude information are collected, and then the real-time position information of the aircraft relative to a runway is solved according to the above collected information; according to an aircraft drift angle, a pitch angle, a roll angle, a head-up mounting angle, a runway slope, a runway course and the real-time position information of the aircraft relative to the runway, the mapping relation of a head-up display coordinate system relative to a runway coordinate system is calculated; and finally the real runway is mapped to the head-up display coordinate system and is converted into information which can be identified by a head-up display picture. According to the drawing method of the invention, the equiangular runway symbols which coincide with an outside real runway contour and grounding points can be displayed in the head-up display, the situation perception ability of a pilot in a low visibility weather condition is enhanced, the workload of the pilot is reduced, and the flight safety is improved.

Description

technical field [0001] The invention relates to a head-up display isometric runway symbol drawing method, which belongs to the technical field of avionics display control. Background technique [0002] The runway is an important reference during the approach process of the aircraft. Under low-visibility weather conditions, if the pilot cannot see the runway clearly, he will feel nervous and the workload will increase, which is not conducive to flight safety. Using the isometric feature of the head-up display, the isometric runway reference marks are drawn on the head-up display, which can provide the pilot with target runway information and assist the pilot to control the aircraft to implement the approach. In the prior art, runway reference marks are usually set by drawing the runway center line on the head-up display screen. This method has the following deficiencies: (1) it does not contain outline information such as runway length and width, and the drawn runway symbol s...

AI Technical Summary

Problems solved by technology

In the prior art, runway reference marks are usually set by drawing the runway center line on the head-up display screen. This method has the following deficiencies: (1) it does not contain outline information such as runway length and width, and the drawn runway symbol situation awareness ability Insufficient; (2) Information on the touchdown point of the aircraft is not included, resulting in insufficient instructions for the landing area provided to the pilot

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