The terrain-avoidance ( TA ) algorithm is very important when the cruise missile based on laser-forward-looking radar avoids the terrain obstruct automatically . For the TA algorithm the concept of flying-vector-triangle is proposed .

针对基于激光 前视 雷达的巡航导弹在巡航 阶段 实现自主地回避地形障碍 物这一课题，在地形回避算法中，提出了飞行矢量三角形的概念。