Hybrid GPS + GLONASS |
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| Authors: | Alan H Dodson Terry Moore David F Baker John W Swann |
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| Institution: | (1) Institute of Engineering Surveying and Space Geodesy (IESSG), The University of Nottingham, NG7 2RD, United Kingdom, GB |
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| Abstract: | The hybridization of GPS with GLONASS has formed a first stage in GNSS development. We examine the performance of the hybrid
system in the position domain for both code and carrier phase cases. Several major differences exist between GPS and GLONASS;
most significant is GLONASS's signal frequency diversity, which can lead to measurement bias, particularly so when a pair
of receivers are operating at different temperatures. Unless signal frequency diversity is addressed either on-receiver or
at the data processing stage, positioning errors can occur at the centimeter level. We outline the difficulties of combining
observations from the two systems and discuss how these may be overcome. ? 1999 John Wiley & Sons, Inc. |
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