一种新的综合TF／TA最优航迹算法

A New Algorithm for Optimal Terrain Following/Terrain Avoidance Trajectory

综合ＴＦ／ＴＡ是新一代低空突防技术，ＴＦ／ＴＡ最优航迹的计算是其控制系统的核心。文中提出了一种新的综合ＴＦ／ＴＡ最优航迹算法，它用动态规划和树型搜索相结合的方法，实时计算综合ＴＦ／ＴＡ最优航迹。算法考虑了飞机机动能力的约束，使最优航迹在不需要平滑处理时就是一个可实现航迹。另外还考虑了威胁的影响，使最优航迹能有效地进行威胁回避。计算结果表明，所得的最优航迹具有综合地形跟踪／回避和威胁回避的能力。

The calculation of the optimal terrain following/terrain avoidance trajectory is the core of the integrated terrain following/terrain avoidance control system which is a new technique of low altitude penetration. This paper presents a new TF/TA optimization approach to calculate in real time the optimum TF/TA trajectory. The optimization technique is an integrated application of the dynamic programming and tree searching. The algorithm takes account of flight maneuvering constraints, so flyable trajectory is obtained without the need for any additional smoothing to assure that all flight constraints are met. Also, the effect of threat is considered, thus, the optimal trajectory generated can efficiently evade threat. The compu ter results are provided to show that the optimum trajectory generated is able to efficiently avoide terrain and evade threat.