终端区域4D导引的高度剖面与速度剖面研究

Altitude and Speed Profile Counting Method of the 4D Guidance in Terminal Area

对终端区域 4 D导航中高度剖面和速度剖面生成的基本算法进行了研究。结合已经开发的水平轨迹计算方法 ,生成终端区域的 3 D飞行剖面和速度剖面 ,然后产生 4 D导航指令 ,利用已生成的 4 D导航指令可在终端区域引导沿直线或曲线飞行的飞机在规定的时间到达指定地点 ,从而实现终端区域的 4 D导引。最后对某民航运输飞机进行了数值模拟 ,由计算结果可看出风对 4 D导航的速度剖面有较大的影响 ,结果还表明该方法计算量小 ,只需输入少量的参数就能生成 4

An algorithm to realize the altitude profile and speed profile of 4D guidance in terminal area is presented in this paper. Combine with the ground track has been explored in previous paper ,3D flight profile and speed profile in terminal area are generated. Then, a sequence of 4D navigation commands corresponding to the desired ground track and altitude profile and speed profile have been computed can be realized. With the 4D navigation commands an airplane flying along a straight or a curved path could be guided to a given waypoint at a given time. Simulation examples of a civil transporter demonstrate that the effect of wind on speed profile of a 4D navigation is distinct,the result also shows the advantages of this approach include low computational requirements, and a sequence of 4D navigation commands could be generated with a few parameters be inputted in this algorithm.