目录
Chapter 2 Global Navigation Satellite System
2.1 GNSS Overview
2.2 Ground Based Augmentation System
2.3 Satellite Based Augmentation System
2.4 Aircraft Based Augmentation System
Chapter 2 Global Navigation Satellite System
2.1 GNSS Overview
2.2 Ground Based Augmentation System
伪距误差源（加粗项可用差分技术消除）：
星历误差
卫星钟差
电离层误差
对流层误差
多径误差
接收机误差
2.3 Satellite Based Augmentation System
2.4 Aircraft Based Augmentation System