A New Method to Accelerate PPP Convergence Time by using a Global Zenith Troposphere Delay Estimate Model. (September 2014)

• Record Type: Journal Article
• Authors: Yao, Yibin; Yu, Chen; Hu, Yufeng
• Is Part Of: Journal of navigation. Volume 67:Number 5(2014)
• Page Start: 899
• Page End: 910
• Publication Date: 2014-09
• Subjects: Navigation -- Periodicals; 623.8905
• DOI: 10.1017/S0373463314000265
• Languages: English
• ISSNs: 0373-4633

Abstract

<abstract abstract-type="normal"> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>This paper presents a new algorithm to accelerate Precise Point Positioning (PPP) convergence. The main idea is to consider the station tropospheric zenith total delay, which is obtained by a global zenith troposphere delay estimate model, as virtual observation and combine it with phase and pseudo-range observations to formulate observation equations. Without relying on any other external enhancement information, it only requires four satellites to quickly complete the positioning with centimetre-level accuracy. Compared with the conventional method, the new one brings about 15% improvement in convergence time.</p> </abstract>