超低空突防中地形跟随/回避技术

 由于防空武器日臻完善,中、高空突防已不可取。但超低空突防,则因地形遮断,地杂波影响,地面雷达很难发现超低空目标。又由于目标太近太快,很难跟踪瞄准,生存率很高。因之,最近二十年来,超低空突防技术日益得到重视和发展。目前已有地形跟随（TF.Terrain.Following）、地形回避（Terrain Avoidance）、地形匹配（Terrain Matching）、障碍回避（Obstacle Clearance）等技术。地形回避是不改变飞行高度高左右转弯从前方障碍中的空挡穿插过去的飞行技术。

TERRAIN FOLLOWJNG AVOIDANCE TECHNIQUE OF VERY LOW ALTITUDE PENETRATION

The very low altitude penetration greatly improves the survivability of aircraft in modern anti-air fire. It causes drastic change in modern air force tactics and thus deserves serious consideration. This paper deals with the technique of aircraft guidance in very low altitude penetration, especially the terrain following technique. It reviews the development of the terrain following technique from the early N method to the modern adaptive angle method, as well as the optimal control method under developing. It also introduces the recent progresses in this field, such as Terrain Storage, combined terrain following and terrain avoidance technique, etc.