超低空飞行器威胁因素评估分析

随着现代战争的发展,超低空飞行技术在作战中的作用越来越大,但超低空飞行极具难度,稍不注意就会发生飞行事故。因此,本文首先对超低空飞行器威胁因素进行详细分类,一级指标包括气象威胁、遮蔽威胁、安全距离威胁、飞行障碍威胁等;二级指标包括风速、能见度、恶劣天气、居民地、谷地、植被、高压线、通信塔、高大建筑物、飞行距离、敌雷达探测范围、敌火控范围等。通过设计评估流程,对任务区域加载测绘地理数据、气象水文数据、地质环境数据,并建立飞行威胁评估指标体系,同时为每个一二级指标分配权值,基于格网化对各飞行威胁因素进行分析计算,最终评估飞行威胁,实现低空超低空飞行威胁的提示警告及威胁回避,从而为超低空飞行军事化应用提供有益的借鉴。

Proportional navigation guidance law based on process schedule

This paper makes researches on multiple independently reentry vehicle （MIRV） ballistic missile interception. It breaks through traditional intercepting methods of missiles and combines comba- ting time characteristics of MIRV missiles with the principle of computer process schedule. In this paper, a way of firstly intercepting the target missile with higher threaten grade is proposed. This method determines the threaten grade of the attacking target according to computer process schedu- ling algorithms, then appljed a proportional navigation guidance law to intercept target missiles in priority so that it achieves the effect of less damage. The simulation results indicate that it is effective to use the proportional navigation guidance law based on the process scheduling to intercept target missile. It possesses referential value in modem weapon combats.

众多临近空间飞行器的最优轨迹规划

针对众多临近空间飞行器在复杂飞行环境的最优轨迹规划问题,采用改进的动态规划法和基于共轭梯度法的多点边值组合算法求解了多目标优化问题,得到了全部飞行器的最优飞行轨迹。仿真结果表明,该算法能够在考虑多种环境条件约束和飞行器自身条件约束的情况下,快速规划出众多飞行器的最优飞行轨迹,具有一定的学术价值和工程应用价值。