GBM快速轨道产品及非差模糊度固定对其精度的改进
GNSS是实时定位导航最重要的方法, 精密卫星轨道钟差产品是GNSS高精度服务的前提。国际GNSS服务中心(IGS)及其分析中心长期致力于GNSS数据处理的研究及高精度轨道和钟差产品的提供。GFZ作为分析中心之一, 提供GBM多系统快速产品。本文基于2015—2021年GBM提供的精密轨道产品, 阐述了数据处理策略, 分析了轨道的精度, 介绍了非差模糊度固定的原理和对精密定轨的影响。结果表明: GBM快速产品中的GPS轨道精度与IGS后处理精密轨道相比的精度约为11~13 mm, 轨道6 h预报精度约为6 cm; GLONASS预报精度约为12 cm, Galileo在该时期的精度均值为10...
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| Published in | Ce hui xue bao Vol. 51; no. 4; pp. 544 - 555 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese English |
| Published |
Beijing
Surveying and Mapping Press
01.04.2022
柏林工业大学,德国柏林10553 德国地学中心大地测量,德国波茨坦14473%德国地学中心大地测量,德国波茨坦14473 中国科学院上海天文台,上海200030%德国地学中心大地测量,德国波茨坦14473 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1595 1001-1595 |
| DOI | 10.11947/j.AGCS.2022.20220022 |
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| Abstract | GNSS是实时定位导航最重要的方法, 精密卫星轨道钟差产品是GNSS高精度服务的前提。国际GNSS服务中心(IGS)及其分析中心长期致力于GNSS数据处理的研究及高精度轨道和钟差产品的提供。GFZ作为分析中心之一, 提供GBM多系统快速产品。本文基于2015—2021年GBM提供的精密轨道产品, 阐述了数据处理策略, 分析了轨道的精度, 介绍了非差模糊度固定的原理和对精密定轨的影响。结果表明: GBM快速产品中的GPS轨道精度与IGS后处理精密轨道相比的精度约为11~13 mm, 轨道6 h预报精度约为6 cm; GLONASS预报精度约为12 cm, Galileo在该时期的精度均值为10 cm, 但是在2016年底以后精度提升到5 cm左右; 北斗系统的中轨卫星(medium earth orbit, MEO)在2020年以后预报精度约为10 cm; 北斗的静止轨道卫星(geostationary earth orbit, GEO)卫星和QZSS卫星的预报精度在米级; 卫星激光测距检核表明, Galileo、GLONASS、BDS-3 MEO卫星轨道精度分别为23、41、47 mm; 此外, 采用150 d观测值的试验结果表明, 采用非差模糊度固定能显著改善MEO卫星轨道精度, 对GPS、GLONASS、Galileo、BDS-2和BDS-3的MEO卫星的6 h时预报精度改善率分别为9%~15%、15%~18%、11%~13%、6%~17%和14%~25%。 |
|---|---|
| AbstractList | P227; GNSS是实时定位导航最重要的方法,精密卫星轨道钟差产品是GNSS高精度服务的前提.国际GNSS服务中心(IGS)及其分析中心长期致力于GNSS数据处理的研究及高精度轨道和钟差产品的提供.GFZ作为分析中心之一,提供GBM多系统快速产品.本文基于2015—2021年GBM提供的精密轨道产品,阐述了数据处理策略,分析了轨道的精度,介绍了非差模糊度固定的原理和对精密定轨的影响.结果表明:GBM快速产品中的GPS轨道精度与IGS后处理精密轨道相比的精度约为11～13 mm,轨道6 h预报精度约为6 cm;GLONASS预报精度约为12 cm,Galil eo在该时期的精度均值为10 cm,但是在2016年底以后精度提升到5 cm左右;北斗系统的中轨卫星(medium earth orbit,MEO)在2020年以后预报精度约为10 cm;北斗的静止轨道卫星(geostationary earth orbit,GEO)卫星和QZSS卫星的预报精度在米级;卫星激光测距检核表明,Galil eo、GLONASS、BDS-3 MEO卫星轨道精度分别为23、41、47 mm;此外,采用150 d观测值的试验结果表明,采用非差模糊度固定能显著改善MEO卫星轨道精度,对GPS、GLONASS、Galil eo、BDS-2和BDS-3的MEO卫星的6 h时预报精度改善率分别为9％ ～15％、15％ ～18％、11％ ～13％、6％ ～17％ 和14％ ～25％. GNSS是实时定位导航最重要的方法, 精密卫星轨道钟差产品是GNSS高精度服务的前提。国际GNSS服务中心(IGS)及其分析中心长期致力于GNSS数据处理的研究及高精度轨道和钟差产品的提供。GFZ作为分析中心之一, 提供GBM多系统快速产品。本文基于2015—2021年GBM提供的精密轨道产品, 阐述了数据处理策略, 分析了轨道的精度, 介绍了非差模糊度固定的原理和对精密定轨的影响。结果表明: GBM快速产品中的GPS轨道精度与IGS后处理精密轨道相比的精度约为11~13 mm, 轨道6 h预报精度约为6 cm; GLONASS预报精度约为12 cm, Galileo在该时期的精度均值为10 cm, 但是在2016年底以后精度提升到5 cm左右; 北斗系统的中轨卫星(medium earth orbit, MEO)在2020年以后预报精度约为10 cm; 北斗的静止轨道卫星(geostationary earth orbit, GEO)卫星和QZSS卫星的预报精度在米级; 卫星激光测距检核表明, Galileo、GLONASS、BDS-3 MEO卫星轨道精度分别为23、41、47 mm; 此外, 采用150 d观测值的试验结果表明, 采用非差模糊度固定能显著改善MEO卫星轨道精度, 对GPS、GLONASS、Galileo、BDS-2和BDS-3的MEO卫星的6 h时预报精度改善率分别为9%~15%、15%~18%、11%~13%、6%~17%和14%~25%。 |
| Author | 葛茂荣 王君刚 邓志国 |
| AuthorAffiliation | 德国地学中心大地测量,德国波茨坦14473%德国地学中心大地测量,德国波茨坦14473;中国科学院上海天文台,上海200030%德国地学中心大地测量,德国波茨坦14473;柏林工业大学,德国柏林10553 |
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| Author_FL | DENG Zhiguo GE Maorong WANG Jungang |
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| SubjectTerms | Ambiguity resolution (mathematics) Data processing Earth orbits Galileo satellite system (Europe) Global navigation satellite system Global positioning systems GLONASS GPS Orbits Predictions Research facilities Satellite laser ranging Satellite navigation systems Satellite orbits Satellites Spacecraft |
| Title | GBM快速轨道产品及非差模糊度固定对其精度的改进 |
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