METHOD FOR PROVIDING FORWARD LOOKING-AHEAD TERRAIN AVOIDANCE ALARM USING TERRAIN ROUGHNESS BASED ALARMING SEARCHING RANGE AUTO CONTROL FOR NUISANCE ALARM MINIMIZATION

摘要

In order to minimize false warnings, a method is provided to provide frontal collision avoidance warnings using automatic adjustment of the terrain steepness-based warning occurrence search range. Based on the speed and turn rate of the aircraft, a list of expected flight paths and per unit time per expected flight path A step of generating a predicted flight path table including latitude, longitude and altitude, and performing a binning and hulling within the collision detection area according to the trajectory for each generated flight path, the path with the lowest predicted collision time And generating a collision warning in time, calculating terrain steepness for at least one point centered on the aircraft, and increasing or decreasing a warning search range based on at least one level of the calculated terrain steepness, and And outputting a collision warning that occurred within the search range of the increased or decreased warning.