一种基于数字地图的轨迹优化算法的改进

Improvement of Digital Map Data Based Guidance Algorithm

在执行飞行任务，特别是进行地形跟随、地形回避（ＴＦ／ＴＡ）飞行时，随着飞行器周围情况的不断变化，需要利用数字地图数据进行实时的轨迹规划并产生相应的制导指令。提高轨迹规划及产生相应的制导指令算法的效率，减少计算时间，对于增强飞行器的机动反应能力，提高飞行的安全性是非常重要的。本文对基于数字地图数据生成优化轨迹和制导指令的一种重要实时算法——动态路径方法进行了改进。通过改变动态规划覆盖和引入“前方”的概念，减少了动态分枝数。

With the changing of environment future aircraft encounter, flight, especially low altitude maneuvering flight, the require an optimum real time trajectory and corresponding guidance command by digital map data. It is extremely important to raise efficiency and reduce calculating time of trajectory generation algorithm for flexibility of aircraft and assurance of safe flight. In this paper a digital terrain data based optimum real time trajectory generation algorithm——the dynapath algorithm is improved. By means of introducing the concept of foreword in digital map, some branches of dynamic programming overlay are discarded.