lectures

Chapter 10 GNSS Augmentation Technique

What is the GNSS augmentation?

enhancement of positioning, vacigation and timing through provision of additional information.

What are the key technologies of satellite based augmentation system?

What is the principle of ground-based augmentation network RTK?

How to design a real-time precise positioning service system?

1. Classification of arious enhancement techniques

Classification criteria: enhancement effect

Ground-Based	G_B	G_B	Satellite-based	S_B
Precision enhancement technique	local area difference technology	precision positioning technology	wide area difference technology	wide area precision positioning technology
Integrity enhancement technology	local different integrity monitoring technology	system integrity monitoring technoogy	wide area difference integrity monitoring technology	wide area difference integrity monitoring technology
Continuous and usability enhancement technology	ground-based pseudo-satellite augmentation technology	ground-based pseudo-satellite augmentation technology	space-based satellite augmentation technology	space-based satellite augmentation technology

2. Steiilte-based Aumentation Systems

Development of GNSS Satellite-based Aumentation Systems

Global:WASS, EGNOS, MSAS,GAGAN,SDCM,KASS;
China:SNAS

Principle of satellite-based augmentation systems

reference network,central processing facility GEOs.