An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks
Integer ambiguity resolution (AR) is a prerequisite for all high-precision (centimetre level) GPS applications that utilise multiple reference station (MRS) networks. However, due to the presence of distance-dependent GPS errors, notably atmospheric refraction, AR across the network is difficult on...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
John Wiley and Sons, Inc.
2004
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| Online Access: | http://hdl.handle.net/20.500.11937/16635 |
| _version_ | 1848749232914169856 |
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| author | Hu, Guorong Abbey, Donald Castleden, James Featherstone, Will Ovstedal, O |
| author_facet | Hu, Guorong Abbey, Donald Castleden, James Featherstone, Will Ovstedal, O |
| author_sort | Hu, Guorong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Integer ambiguity resolution (AR) is a prerequisite for all high-precision (centimetre level) GPS applications that utilise multiple reference station (MRS) networks. However, due to the presence of distance-dependent GPS errors, notably atmospheric refraction, AR across the network is difficult on an epoch-by-epoch basis, especially for medium- to long-range (typically 30?130 km as used here) MRS networks. This paper presents an approach for medium- to long-range instantaneous AR for MRS networks, based on an ionosphere-weighted observation model and network geometry constraints, along with a multiple ambiguity validation test procedure. The performance of the proposed method was demonstrated through two case-study examples from Australia and Norway. Our test results show that the instantaneous AR success rate varied from 93% (131 km baseline) to 98% (35 km baseline).It is also shown that the adopted high-precision prediction models for the double-difference (DD) ionospheric delay and residual tropospheric zenith delay (RTZD) are of benefit to the high success rate of the network AR. Due to its epoch-by-epoch nature, the proposed approach is insensitive to cycle-slips, rising or setting satellites, or loss-of-lock. |
| first_indexed | 2025-11-14T07:17:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-16635 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:17:40Z |
| publishDate | 2004 |
| publisher | John Wiley and Sons, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-166352017-09-13T15:44:54Z An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks Hu, Guorong Abbey, Donald Castleden, James Featherstone, Will Ovstedal, O Integer ambiguity resolution (AR) is a prerequisite for all high-precision (centimetre level) GPS applications that utilise multiple reference station (MRS) networks. However, due to the presence of distance-dependent GPS errors, notably atmospheric refraction, AR across the network is difficult on an epoch-by-epoch basis, especially for medium- to long-range (typically 30?130 km as used here) MRS networks. This paper presents an approach for medium- to long-range instantaneous AR for MRS networks, based on an ionosphere-weighted observation model and network geometry constraints, along with a multiple ambiguity validation test procedure. The performance of the proposed method was demonstrated through two case-study examples from Australia and Norway. Our test results show that the instantaneous AR success rate varied from 93% (131 km baseline) to 98% (35 km baseline).It is also shown that the adopted high-precision prediction models for the double-difference (DD) ionospheric delay and residual tropospheric zenith delay (RTZD) are of benefit to the high success rate of the network AR. Due to its epoch-by-epoch nature, the proposed approach is insensitive to cycle-slips, rising or setting satellites, or loss-of-lock. 2004 Journal Article http://hdl.handle.net/20.500.11937/16635 10.1007/s10291-004-0120-8 John Wiley and Sons, Inc. restricted |
| spellingShingle | Hu, Guorong Abbey, Donald Castleden, James Featherstone, Will Ovstedal, O An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks |
| title | An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks |
| title_full | An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks |
| title_fullStr | An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks |
| title_full_unstemmed | An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks |
| title_short | An Approach for Instantaneous Ambiguity Resolution for Medium- to Long-range Multiple Reference Station Networks |
| title_sort | approach for instantaneous ambiguity resolution for medium- to long-range multiple reference station networks |
| url | http://hdl.handle.net/20.500.11937/16635 |