利用GPS/INS导引飞机精密进场的数值仿真研究

A STUDY OF THE AIRPLANE PRECISION LANDING APPROACH UNDER GUIDANCE OF GPS/INS

建立了飞机进场的数学模型和导航观测器模型;确定了导引飞机精密进场的最优控制;以Airbus-300为例,给出了稳定的着陆窗口;计算了在GPS的各种定位精度范围内,从着陆窗口内开始着陆的飞机所能达到的等级;研究了GPS采样周期对飞机着陆精度的影响;分析了大气紊流和常值侧风对飞机着陆精度的影响。从计算和数值仿真结果得出了一些初步结论。

In this paper the mathematical models of the airplane approach flight and the GPS navigation observer are presented, The optimal control for the airplane precision landing approach is established, the stable landing window for Airbus-300 (as an example) is determined, the reachable landing category for various GPS positioning precision is calculated, the influence of sampling period on the landing precision is studied and the effects of atmospheric turbulence and side wind on the landing precision are analysed. Some conclusions are drawn from the results of calculation and numerical simulation.