A Model for Combined GPS and BDS Real-Time Kinematic Positioning using one Common Reference Ambiguity. (6th March 2018)

• Record Type: Journal Article
• Authors: Tu, Rui; Liu, Jinhai; Zhang, Rui; Zhang, Pengfei; Lu, Xiaochun
• Is Part Of: Journal of navigation. Volume 71:Number 4(2018)
• Page Start: 1011
• Page End: 1024
• Publication Date: 2018-03-06
• Subjects: GPS, -- BDS, -- RTK, -- Reference ambiguity; Navigation -- Periodicals; 623.8905
• DOI: 10.1017/S0373463318000061
• Languages: English
• ISSNs: 0373-4633

Abstract

Abstract : This paper proposes a model for combined Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS) Real-Time Kinematic (RTK) positioning. The approach uses only one common reference ambiguity, for example, that of GPS L1, and estimates the pseudo-range and carrier phase system and frequency biases. The validations show that these biases are stable during a continuous reference ambiguity period and can be easily estimated, and the other estimated double-differenced ambiguities, such as those of GPS L2, BDS L1, and BDS L2, are not affected. Therefore, our approach solves the problems of a frequently changing reference satellite. In addition, because all the carrier phase observations use the same reference ambiguity, a relationship is established between the different systems and frequencies, and the strength of the combined model is thus increased.