A new approach for mitigating carrier phase multipath errors in multi-gnss real-time kinematic (RTK) receivers

Author

Sahmoudi, M. ; Kouki, A. ; Landry, R., Jr.

Author_Institution

LACIME Lab., Quebec Univ., Montréal, QC, Canada

fYear

2010

fDate

14-19 March 2010

Firstpage

3486

Lastpage

3489

Abstract

In this paper, we introduce a new approach for RTK positioning using triple-frequency combinations of GNSS measurements in presence of carrier phase multipath. The proposed method is based on a modification of the LAMBDA method, where the a-priori information on multipath errors is exploited as a constraint in the optimization and ambiguities search process to mitigate the effect of multipath. Triple-frequency combinations of measurements is used to formulate a new carrier phase multipath index, then incorporate it as additional constraint in the LAMBDA method cost function for multi-frequency ambiguity resolution. Simulations and real experiments shows the effectiveness of the developed scheme.

Keywords

multipath channels; optimisation; radio receivers; satellite navigation; Lambda method; RTK positioning; carrier phase multipath errors; multi-GNSS real-time kinematic receivers; triple-frequency combinations; Constraint optimization; Cost function; Delay; Frequency measurement; Global Positioning System; Kinematics; Phase measurement; Position measurement; Q measurement; Satellite navigation systems; RTK; Triple-frequency GNSS measurements; carrier multipath; integer ambiguity resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on

Conference_Location

Dallas, TX

ISSN

1520-6149

Print_ISBN

978-1-4244-4295-9

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2010.5495961

Filename

5495961