复杂战场环境下低可观测飞行器航迹规划方法研究

【作者】 沈燕；

【导师】 戴跃伟；

【作者基本信息】 南京理工大学 ， 控制理论与控制工程， 2008， 硕士

【摘要】 航迹规划技术是现代低空突防系统中的关键技术之一,它充分利用地形遮蔽和雷达盲区对敌方进行突然打击,提高了飞行器攻击的安全性、精确性和多样性。为此本文研究了复杂战场环境下的低可观测飞行器的航迹规划方法。本文在深入分析该课题前阶段研究工作的基础上,深入研究了A~*算法,改进了节点扩展方式,以找到最优航迹。文中分析了不同的威胁模型,包括地形突现威胁、机载雷达威胁、电磁干扰威胁,为代价函数参数的设定提供了依据。此外,为满足飞行器机动状态下的飞行要求,对数字地形进行插值预处理、地形平滑以及航迹平滑。本文还研究了在数据链通信情况下的基于A~*算法的针对地面突现威胁、移动机载雷达的航迹规划方法。文中编程实现了算法,并做了基于VC与MATLAB混合编程的针对各种不同任务的航迹规划仿真实验,仿真结果证明了上述航迹规划方法的有效性。最后对全文进行了总结,并对需要进一步研究的问题和方向提出了看法。更多还原

【Abstract】 The route planning is the key technique for the aircrafts to achieve low altitude penetration flight. It adequately uses the defilade of terrain and blind area of radar. Depending on this technique, survival ability, accuracy and diversity of aerial assault have been greatly improved. Therefore, the research is made on the route planning method of low observable aircraft under the complex condition.On the basic of the work of pre-period, the A~* algorithm is deeply studied, and the method of expanding nodes is improved to find the best route.The thesis analyzes terrain threat which appears suddenly, moving radar threat, electromagnetism interference, etc, and all these have provided foundation for the cost function parameter.Because of the limits of the aircraft’s capability, the thesis makes a research on the pretreatment and smoothness of digital terrain, and smoothness of the route.The A~*-based route planning methods with terrain threat which appears suddenly, moving radar threat are studied on the condition of data link communication.The route planning simulation program is developed based on mixed program of VC and MATLAB. The simulation experiment is conducted on various tasks and the results prove the effectiveness of the route planning method.In the final part, a conclusion about route planning method is made and suggestions for further research are given.更多还原