GPS是利用导航卫星进行测时和测距的全球定位系统的简称。它能全天候向全球用户连续、实时地提供三维位置、三维速度和精确时间。由于它提供的信息多而准,小巧又轻便,所以很快被应用于军事与民用领域。 GPS已在军用飞机和民用飞机上得到广泛应用,且效果很好。很快,超轻型飞机驾驶员对GPS也产生了极大兴趣。因为超轻型飞机的飞行速度慢,受风的影响很大;超轻型飞机的飞行高度一般在低空,其风向、风 GPS is the short name of the global positioning system that uses navigation satellites to measure time and distance. It provides continuous, real-time, three-dimensional location, 3D speed, and precise time to users worldwide. Because of the information it provides more and more accurate, small and lightweight, it is quickly being used in military and civilian areas. GPS has been widely used in military aircraft and civilian aircraft, and the effect is very good. Soon, ultralight pilots also have a great interest in GPS. Because of the slow speed of ultralight aircraft, the impact of the wind is very large; ultralight aircraft flight altitude is generally low, the wind direction, the wind