Terrain prompt implementation method for airborne synthetic vision

Abstract

The invention discloses a terrain prompt implementation method for airborne synthetic vision, which comprises the following steps: a terrain prompt area comprises a basic coloring area and an extended coloring area, and coloring terrain nodes of which horizontal projections fall into the terrain prompt area; the basic coloring domain is a truncated sector, the central angle of the sector is the included angle of the projection of the visual cone on the horizontal plane, and the radius of the sector is the product of the reserved processing time and the maximum cruising speed of the aircraft; the extended coloring domain is an approximate sector with a fixed range, and the central angle of the extended coloring domain is defined to be 1 / 4 of the projection angle of the horizontal field angle extended towards the two sides by taking the horizontal projection of the view cone during head-up as the basis and the horizontal projection of the sight line as the center line. The device has the beneficial effects that the device has the function of visually prompting potential dangerous landforms, so that a pilot can perform related operation in advance to avoid the danger of falling into the mountain and the ground, and the flight safety is improved.

Description

technical field [0001] The present invention relates to the field of airborne synthetic vision, in particular, to a method for realizing terrain cues for airborne synthetic vision. Background technique [0002] Airborne synthetic vision is a system to ensure the safety of the aircraft, which appeared to solve the problem that pilots cannot visually perceive the surrounding environment of the aircraft under low visibility conditions. The airborne synthetic vision is based on the longitude, latitude, attitude, heading and other information provided by the airborne sensors, combined with the pre-stored terrain, obstacles and navigation databases, and the computer generates a virtual 3D terrain scene image outside the aircraft in real time. Although the airborne synthetic vision provides the pilot with clear three-dimensional terrain information that is not limited by the external environmental factors of the aircraft, it does not prompt the pilot whether the terrain in his fiel...

AI Technical Summary

Problems solved by technology

Although the airborne synthetic vision provides the pilot with clear three-dimensional terrain information that is not limited by the external environmental factors of the aircraft, it does not prompt the pilot whether the terrain in his field of vision poses a threat to flight safety

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