GALILEO局域增强完备性监测网布设研究

Study on GALILEO local area augmentation of monitoring network

完备性是飞机飞行安全的重要指标之一。我国在各种网的布设中一般只注重精度,而忽略了完备性。本文利用GALILEO模拟数据,在飞行轨迹固定的情况下,通过增减监测站的数量以及变换监测网的形状,计算飞机的精度和垂直保护水平(VPL),并分析飞机在不同监测网中精度和垂直保护水平的的变化规律,可以知道飞机在正方形网形的整体精度好于在其他网形中的精度,飞机在在正方形网形中的VPL虽大于在五边网形中的VPL,但两者相差很少。综合考虑,正方形网形是局域完备性监测网的最优布设网形。

Integrity is one of the most important indices for the plane＇s safety. In China, we usually pay attention to the precision of the network, but neglect the integrity. In this article, the author uses data of GALILEO simulation to compute the precision and vertical protect level and analyze the changing disciplinarian by changing the number and the location of the monitoring stations when the plane＇s track is fixed. Then, it analyzes the changing disciplinarian when the plane is in the different monitoring networks. At last, the author concludes that the precision in the square network is better than it in the other networks, the VPL in the square network is bigger than it in the pentagon network, hut the difference is very little. For carefully consideration, the author thinks that the square network is the best network for the local area augmentation of monitoring network.