|
|
- 2018
GNSS实时精密轨道快速计算方法及服务
|
Abstract:
多系统全球导航卫星系统（Global Navigation Satellite System，GNSS）精密轨道确定及其预报是实现高精度实时精密定位的前提。针对多GNSS系统超快速轨道解算时效性及轨道预报精度随时间下降的问题，提出一种基于分块递推最小二乘配置方法，该方法通过对动力学和几何学待估参数松弛、连接以及轨道状态参数转移递推，能够同时兼容事后及实时滤波定轨方法。该方法能够有效地提高多GNSS系统轨道解算效率，缩短实时轨道更新时间。基于全球实测数据验证了该方法的可靠性和有效性，轨道精度优于国际GNSS服务组织发布的GPS超快速轨道及德国地学研究中心发布的超快速轨道，实验结果表明，采用该方法，GPS/GLONASS/Galileo/BDS四系统120个地面测站精密定轨可以实现1 h更新，延迟30 min发布，统计GPS/GLONASS/Galileo/BDS实时轨道可用部分3D均方根分别为2.8 cm、8.5 cm、5.0 cm及11.5 cm（IGSO/MEO）。目前，1 h更新多GNSS系统轨道及实时产品服务系统已业务化发布，较之前发布的3 h更新及6 h更新轨道分别有20%~40%的精度提升
| [1] | Brockmann E. Combination of Solutions for Geode-tic and Geodynamic Applications of the Global Positioning System (GPS)[J]. Geod-Geophys Arb Schweiz, 1997,55:55 |
| [2] | Andersen P H. Multi-level Arc Combination with Stochastic Parameters[J]. Journal of Geodesy, 2000, 74(7):531-551 |
| [3] | Yao Yibin. Theory and Realization of GPS Orbit Integration[J]. Geomatics and Information Science of Wuhan University, 2007, 32(6):510-514(姚宜斌. GPS轨道合成原理及其实现[J]. 武汉大学学报·信息科学版, 2007, 32(6):510-514) |
| [4] | Pavlis N K, Holmes S A, Kenyon S C, et al. The Development and Evaluation of Earth Gravitational Model (EGM2008)[J]. Journal of Geophysical Research:Solid Earth, 2013, 118(5):2633 |
| [5] | Petit G, Luzum B. IERS Conventions (2010)[R]. IERS Technical Note No. 36, IERS Convention Centre, 2010 |
| [6] | Montenbruck O, Gill E, Lutze F. Satellite Orbits:Models, Methods, and Applications[J]. Applied Mechanics Reviews, 2002, 55(2):2504-2510 |
| [7] | Cai C, Liu Z, Xia P, et al. Cycle Slip Detection and Repair for Undifferenced GPS Observations Under High Ionospheric Activity[J]. GPS Solutions, 2013, 17(2):247-260 |
| [8] | Zhao Q, Sun B, Dai Z, et al. Real-Time Detection and Repair of Cycle Slips in Triple-Frequency GNSS Measurements[J]. GPS Solutions, 2015, 19(3):381-391 |
| [9] | Feng Y. GNSS Three Carrier Ambiguity Resolution Using Ionosphere-Reduced Virtual Signals[J]. Journal of Geodesy, 2008, 82(12):847-862 |
| [10] | Montenbruck O,Steigenberger P,Prange L,et al. The Multi-GNSS Experiment (MGEX) of the International GNSS Service (IGS) -Achievements,Prospects and Challenges[J]. Advances in Space Research,2017, 59(7):1671-1697 |
| [11] | Beutler G, Rothacher M, Schaer S, et al. The International GPS Service (IGS):An Interdisciplinary Service in Support of Earth Sciences[J]. Advances in Space Research, 1999, 23(4):631-653 |
| [12] | Lou Yidong, Shi Chuang, Ge Maorong, et al. GPS Real Time Orbit Determination and Initial Results Analysis[J].Geomatics and Information Science of Wuhan University, 2008, 33(8):815-817(楼益栋, 施闯, 葛茂荣,等. GPS卫星实时精密定轨及初步结果分析[J]. 武汉大学学报·信息科学版, 2008, 33(8):815-817) |
| [13] | Lutz S, Meindl M, Steigenberger P, et al. Impact of the Arc Length on GNSS Analysis Results[J]. Journal of Geodesy, 2016, 90(4):1-14 |
| [14] | Liu Weiping, Hao Jinming, Yu Heli, et al. Solution Method and Precision Analysis of Multi-days Orbit Combination of BeiDou Satellites[J].Acta Geodaetica et Cartographica Sinica, 2016, 45(10):1157-1164(刘伟平, 郝金明, 于合理, 等. 北斗卫星多天轨道合成方法及其精度分析[J]. 测绘学报, 2016, 45(10):1157-1164) |
| [15] | Kazmierski K, Sosnica K, Hadas T. Quality Assessment of Multi-GNSS Orbits and Clocks for Real-Time Precise Point Positioning[J]. GPS Solutions, 2018, 22(1):11 |
| [16] | Beutler G, Brockmann E, Gurtner W, et al. Extended Orbit Modeling Techniques at the CODE Processing Center of the International GPS Service for Geodynamics (IGS):Theory and Initial Results[J]. Manuscripta Geodaetica, 1994,19:367-386 |
| [17] | Zhao Qile. Research on Precision Orbit Determination Theory and Software of Both GPS Naviagation Constellation and LEO Satellites[D]. Wuhan:Wuhan University, 2005(赵齐乐. GPS导航星座及低轨卫星的精密定轨理论和软件研究[D]. 武汉:武汉大学, 2005) |
| [18] | Ge Maorong. Study on Theory and Software of Precise Oribt Determination for GPS Satellite[D]. Wuhan:Wuhan University, 1995(葛茂荣. GPS卫星精密定轨理论及软件研究[D]. 武汉:武汉大学, 1995) |
| [19] | Duan Bingbing, Chen Junping. Extended Filter for Real-Time Multi-GNSS Orbit Determination[C]. IGS Workshop,Sydney,NSW,Australia,2016 |
| [20] | Mervart L, Weber G. Real-Time Combination of GNSS Orbit and Clock Correction Streams Using a Kalman Filter Approach[C]. The 24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2011), Portland, USA,2011 |
| [21] | Fritsche M, Dietrich R, Kn？fel C, et al. Impact of Higher-Order Ionospheric Terms on GPS Estimates[J]. Geophysical Research Letters, 2005, 32(23):113-133 |
| [22] | Dow J M,Neilan R E,Rizos C. The International GNSS Service in a Changing Landscape of Global Navigation Satellite Systems[J]. Journal of Geodesy,2009, 83(3-4):191-198 |
| [23] | Dong D N, Bock Y. Global Positioning System Network Analysis with Phase Ambiguity Resolution Applied to Crustal Deformation Studies in California[J]. Journal of Geophysical Research:Atmospheres, 1989, 94(B4):3949-3966 |
| [24] | Ge M, Gendt G, Dick G, et al. Improving Carrier-Phase Ambiguity Resolution in Global GPS Network Solutions[J]. Journal of Geodesy, 2005, 79(1):103-110 |
| [25] | Li X, Ge M, Zhang H, et al. A Method for Improving Uncalibrated Phase Delay Estimation and Ambiguity-Fixing in Real-Time Precise Point Positioning[J]. Journal of Geodesy, 2013, 87(5):405-416 |
| [26] | Ge M, Gendt G, Rothacher M, et al. Resolution of GPS Carrier-Phase Ambiguities in Precise Point Positioning (PPP) with Daily Observations[J]. Journal of Geodesy, 2008, 82(7):389-399 |
| [27] | Cai H, Chen K, Xu T, et al. The iGMAS Combined Products and the Analysis of Their Consistency[C]//China Satellite Navigation Conference (CSNC) 2015 Proceedings:Volume Ⅲ. Berlin, Heidelberg:Springer,2015,342:213-226 |
| [28] | Dong D, Herring T A, King R W. Estimating Regional Deformation from a Combination of Space and Terrestrial Geodetic Data[J]. Journal of Geodesy, 1998, 72(4):200-214 |
| [29] | Li X, Chen X, Ge M, et al. Improving Multi-GNSS Ultra-Rapid Orbit Determination for Real-Time Precise Point Positioning[J]. Journal of Geodesy, 2018,92(3):1-20 |
| [30] | Guo J, Xu X, Zhao Q, et al. Precise Orbit Determination for Quad-Constellation Satellites at Wuhan University:Strategy, Result Validation, and Comparison[J]. Journal of Geodesy, 2016, 90(2):1-17 |
| [31] | Dai Xiaolei. Real-Time Precise GNSS Satellite Orbit Determination Using the SRIF Method:Theory and Implementation[D]. Wuhan:Wuhan University, 2016(戴小蕾. 基于平方根信息滤波的GNSS导航卫星实时精密定轨理论与方法[D]. 武汉:武汉大学, 2016) |
