In a few countries, the airport elevation is determined at the airport reference point. 有一些国家的机场标高是由机场基准点(ARP)而决定的。
Finally, we work out the parameters of each waypoint according to the obstacle data within the terminal area, airport runway axis, the airport reference point. 并根据某机场终端区范围内障碍物数据、机场跑道轴线方向、机场基准点(ARP)等数据进行计算,得到该机场的进近程序各个航路点的航迹参数。