基于地形跟随模型的极限告警曲线计算方法  

A Calculation Method of Limit Alarm Curve Based on Terrain Following Model

作　　者：孙锴 庞华群 温佳 闵彤 张启鹏 SUN Kai;PANG Huaqun;WEN Jia;MIN Tong;ZHANG Qipeng(Taiyuan Aviation Instrument Co.,LTD.,Taiyuan 030006,China;School of Electronic Information,Northwestern Polytechnical University,Xi'an 710072,China;Military Representative Office of Air Force Armament Department in Taiyuan Area,Taiyuan 030006,China)

机构地区：[1]太原航空仪表有限公司,太原030006 [2]西北工业大学电子信息学院,西安710072 [3]空军装备部驻太原地区军事代表室,太原030006

出　　处：《火力与指挥控制》2024年第1期97-104,共8页Fire Control & Command Control

摘　　要：近年来由于地形因素导致的民航飞机撞地事故频发,为提高通航飞行安全系数,减少事故悲剧,提出一套可靠有效的基于地形跟随模型的极限告警曲线计算方法。根据全球数字地形数据进行地形跟随航迹规划,构建飞机的基本运动模型和碰撞模型,利用每个规划航迹点的飞行状态,建立对应的告警方法;针对触发告警的情况,根据避障操作过程提出极限告警点的计算方法;最后利用插值拟合方法得到一条完整的极限告警曲线。仿真验证可知,该算法拟合出的极限告警曲线合理有效,飞行器在按照固定航路飞行时,通过快速对比航向与该极限告警曲线的交点,即可快速得到告警信息和合理的极限避撞方案。In recent years,civil aircraft crash accidents caused by terrain factors are frequent.In or-der to improve the safety factor of general aviation flight and to reduce the accident tragedy,a set of reli-able and effective calculation method of limit alarm curve based on terrain following model is proposed.Firstly,terrain following track planning is carried out according to the global digital terrain data.Secondly,the basic motion model and collision model of the aircraft are constructed,and the corresponding alarm method is established by using the flight state of each planned track point.Then the calculation method of the limit alarm point is proposed according to the operation process of obstacle avoidance when an alarm triggers.Finally,a complete limit alarm curve is obtained by interpolation fitting method.The simulation verification shows that the limit alarm curve fitted by the algorithm is reasonable and effective.When the aircraft flies on a fixed route,the alarm information and reasonable limit collision avoidance scheme can be quickly obtained by quickly comparing the intersection point between the course and the limit alarm curve.

关 键 词：地形跟随 近地告警 极限告警点 极限告警曲线 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] V328.3[自动化与计算机技术—计算机科学与技术]