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Particle Filter-Based Inter-System Positioning Model for Non-Overlapping Frequency Code Division Multiple Access Systems

Published online by Cambridge University Press:  18 March 2020

Rui Shang ,
Xiaolin Meng ,
Chengfa Gao ,
Shuguo Pan Open the ORCID record for Shuguo Pan [Opens in a new window] ,
Wang Gao  and
Zihan Peng
Rui Shang
Affiliation:
(School of Transportation, Southeast University, Nanjing, China) (Nottingham Geospatial Institute, University of Nottingham, Nottingham, United Kingdom)
Xiaolin Meng
Affiliation:
(Nottingham Geospatial Institute, University of Nottingham, Nottingham, United Kingdom)
Chengfa Gao*
Affiliation:
(School of Transportation, Southeast University, Nanjing, China)
Shuguo Pan
Affiliation:
(School of Instrument Science and Engineering, Southeast University, Nanjing, China)
Wang Gao
Affiliation:
(School of Instrument Science and Engineering, Southeast University, Nanjing, China)
Zihan Peng
Affiliation:
(School of Transportation, Southeast University, Nanjing, China)
*
(E-mail: gaochfa_seu@163.com)
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Abstract

In the process of composing a double-differenced positioning model, it is difficult to separate different frequency signals between code division multiple access (CDMA) systems, the single-difference ambiguity of the pivot satellite and phase differential inter-system biases (PDISBs). Hence it is difficult to calibrate in advance the bias between systems in order to build an inter-system model which only needs one pivot satellite. Based on analysis of the stability of PDISB parameters for non-overlapping frequency CDMA systems, this study adopts a particle filter to estimate the fractional part of the PDISBs (F-PDISBs) between the systems and proposes a particle filter-based inter-system positioning model. Results show that the F-PDISBs and code DISBs for the baselines with the same receiver types and some with different receiver types are rather stable over time and for these baselines it is feasible to use a particle filter to estimate the F-PDISB parameters in the initial stage. Having attained the F-PDISBs, the inter-system model can be constructed to improve positioning accuracy in complex operational environments.

Keywords

Global Navigation Satellite Systems (GNSS)Differential Inter-System Biases (DISBs)Particle Filter
Type
Research Article
Information
The Journal of Navigation , Volume 73 , Issue 4 , July 2020 , pp. 953 - 970
Copyright
Copyright © The Royal Institute of Navigation 2020

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