雷达定位误差对飞机流延误的影响研究

Research on Effect of Radar Fixing Error on Delay of Plane Flow

由于雷达定位误差的存在,导致飞机位置的测量值与真实值存在一定的偏差。为了将相邻飞机对违反最小安全间隔的概率控制在一定的范围之内,需要增加飞机对之间的间隔距离,从而导致飞机降落时间延误的增加。为解决上述问题,提出通过数学方法推导定位误差与缓冲间隔时间之间的关系。然后,通过仿真和实例计算,研究在不同到达率和定位误差情况下,飞机流延误的变化情况。结果表明,相对于确定性情况,定位误差对飞机序列延误的影响是比较明显的;定位误差对飞机序列延误的影响不仅与定位误差的大小相关,与平均到达率也有一定的关系。进一步说明,雷达对飞机的准确定位,可以减小飞机的延误时间。

Fixing errors of radar lead to some deviation of measuring results from true values. Normal interval between consecutive planes must be extended to accommodate air traffic control regulation. To attack the above problem, mathematical relationship between fixing error and buffer time was deduced. Then, the variation of plane flow delay was researched in different condition of fixing error by means of simulation and practical calculation. It is shown that the effect of fixing error on plane flow delay is apparent compared with the determined situation. What is more, the amount of delay is not only related to fixing error but also to average arrival rate. The research also indicates that precise fixing of radar can reduce the delay of plane.