Patent ID: 6782312
Filing Date: 2004-08-24
Classification: B64D,G01C

Abstract:
A method for adapting an aircraft terrain display in response to situational parameters, the display comprising one more patches of terrain data comprising a plurality of terrain data points:computing a terrain roughness parameter to characterize terrain roughness for an area of terrain to be displayed; computing a color array having one or more elements for each of the terrain data points; computing a contrast multiplier as a function of the terrain roughness parameter; multiplying the contrast multiplier by a situation parameter that varies depending upon the flight mode of the aircraft to determine a situation contrast multiplier, computing a lighting component using the situation contrast multiplier for each of the terrain data points; multiplying the lighting component for each of the terrain data points by each element of the color array to obtain a set of display terrain data to be displayed; and displaying the display terrain data on the display.