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Synthetic Vision System with enhanced ground representation

IP.com Disclosure Number: IPCOM000244500D
Publication Date: 2015-Dec-17
Document File: 3 page(s) / 105K

Publishing Venue

The IP.com Prior Art Database

Abstract

This paper describes a new pattern superposed on the ground of a synthetic scene displayed by an aircraft synthetic vision system

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Synthetic Vision System with enhanced ground representation

Abstract

This paper describes a new pattern superposed on the ground of a synthetic scene displayed by an aircraft synthetic vision system

Synthetic vision system:

A synthetic vision system (SVS) is a computer-mediated reality system for aircrafts that uses 3D to display a scene on a screen so as to provide pilots with clear means of understanding their flying environment, in particular when flying under low visibility conditions.

On the screen are represented a generic ground ( sea in blue, terrain in brown), a generic blue sky and information relative to the flight, such as a spot representing the aircraft and other flight related data.

In order to provide the pilot with familiar landmark so as to assess the distance from the aircraft to the ground for instance, a pattern having known dimensions is superposed to the ground .This pattern is a wired texture, i.e. a grid, of transparent squares of 1 nm sides as shown on the figure 1 below.

Fig.: 1 NM grid pattern


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This pattern is satisfactory, but some pilots could be hampered by the straight lines directed towards the bottom of the scene and that are formed by the aligned sides of the successive grids. This could lead to an optical illusion that the squares are not all of the same size. This may mislead the pilot for a good evaluation of the aircraft's height.

Moreover, by night, when the SVS switches to a night mode illumination (dark blue...