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研究飞机制导优化问题,由于飞行速度快,跟踪存在问题,制导精度差。传统民用飞机制导采用检索的三维跟踪,算法简单,但制导精度低,且没有对时间的精确控制,而先进制导理论具有较高的精度,但快速性低,难以实现工程应用。为了同时满足制导精确性和飞行快速性与实时跟踪的要求,提出利用模态切换的四维制导算法。以上升段为例进行实验,结果导引自动飞行模态实现了轨迹与时间的四维跟踪,改善了制导算法快速性和制导精确性。仿真结果表明,提出的制导方法可以达到较高的精度。与国内外的其它制导算法相比,复杂度低,实现简单,适合工程应用。
The study of aircraft guidance optimization problems, due to the flight speed, tracking problems, poor guidance accuracy. The traditional civil aircraft guidance using retrieval of three-dimensional tracking, the algorithm is simple, but the guidance accuracy is low, and there is no precise control of time, and advanced guidance theory with high accuracy, but low speed, difficult to achieve engineering applications. In order to meet the requirements of guidance accuracy, flight fastness and real-time tracking, a four-dimensional steering guidance algorithm using modal switching is proposed. Taking the ascending section as an example, the experimental results show that the guided automatic flight mode can achieve the four-dimensional tracking of trajectory and time, and improve the speed and guidance accuracy of the guidance algorithm. Simulation results show that the proposed guidance method can achieve higher accuracy. Compared with other guidance algorithms at home and abroad, the complexity is low, and the implementation is simple and suitable for engineering application.