Abstract: A collision avoidance system and method is provided for detecting obstacles or terrain likely to be encountered by fixed wing or rotary wing platform aircraft in bad weather conditions or at low altitude, and for alerting the user in advance.

Abstract: A method for effective Height Above Terrain (HAT) analysis display in avionics software is provided. The method enables the display of height above terrain analysis with high performance by the usage of high resolution data. The method includes preparing a shader program, mapping program variables, compiling the shader program, activating the compiled shader program and executing all graphics processing instructions; transferring elevation tiles and running the shader program; transferring an aircraft altitude; and running the shader program, comparing each cell's elevation value to the aircraft altitude and interpreting the difference in values, and displaying a colour value.