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Assessment of Radio Frequency Compatibility Relevant to the Galileo E1/E6 and Compass B1/B3 Bands

Published online by Cambridge University Press:  28 May 2010

Wei Liu ,
Gang Du ,
Xingqun Zhan  and
Chuanrun Zhai
Wei Liu*
Affiliation:
(School of Aeronautics and Astronautics, Shanghai Jiao Tong University)
Gang Du
Affiliation:
(School of Aeronautics and Astronautics, Shanghai Jiao Tong University)
Xingqun Zhan
Affiliation:
(School of Aeronautics and Astronautics, Shanghai Jiao Tong University)
Chuanrun Zhai
Affiliation:
(School of Aeronautics and Astronautics, Shanghai Jiao Tong University)
*
(Email: Liu@sjtu.org)
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Abstract

The intersystem interference between Galileo and Compass, known as a radio frequency compatibility problem, has become a matter of great concern for the system providers and user communities. This paper firstly describes two fundamentally different methods to assess the Global Navigation Satellite System (GNSS) intersystem interference, by using different interference coefficients that are calculated for each combination of signals: the spectral separation coefficient (SSC) and code tracking spectral sensitivity coefficient (CT_SSC). And then a complete methodology combining the SSC and CT_SSC is presented. Real simulations are carried out to assess the interference effects where Galileo and Compass signals are sharing the same band (E1/B1 and E6/B3 bands) at every time and place on the Earth. Simulation results show that the effects of intersystem interference are significantly different by using these two methodologies. It is also shown that the Compass system leads to intersystem interference on Galileo but that the maximal values are lower than Galileo interference to Compass. The design and implementation of any new signal has to be conducted carefully in order for there to be radio frequency compatibility.

Keywords

CompatibilityGalileoCompass
Type
Research Article
Information
The Journal of Navigation , Volume 63 , Issue 3 , July 2010 , pp. 419 - 434
Copyright
Copyright © The Royal Institute of Navigation 2010

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