[1] 张小红, 李星星, 郭斐, 等. GPS单频精密单点定位软件实现与精度分析[J]. 武汉大学学报·信息科学版, 2008, 33(8): 783-787 http://ch.whu.edu.cn/article/id/1678

Zhang Xiaohong, Li Xingxing, Guo Fei, et al. Realization and Precision Analysis of Single-Frequency Precise Point Positioning Software[J]. Geomatics and Information Science of Wuhan University, 2008, 33(8): 783-787 http://ch.whu.edu.cn/article/id/1678
[2] 房成贺, 陈俊平, 兰孝奇, 等. 联合BDS/GPS的北斗广域差分实时电离层延迟格网改正方法研究[J]. 大地测量与地球动力学, 2019, 39(2): 169-177 https://www.cnki.com.cn/Article/CJFDTOTAL-DKXB201902013.htm

Fang Chenghe, Chen Junping, Lan Xiaoqi, et al. Research on BeiDou Wide Area Real-Time Differential Ionospheric Delay Grid Correction Based on BDS/GPS Observations[J]. Journal of Geodesy and Geodynamics, 2019, 39(2): 169-177 https://www.cnki.com.cn/Article/CJFDTOTAL-DKXB201902013.htm
[3] Li Xingxing, Ge Maorong, Zhang Hongping, 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 doi:  10.1007/s00190-013-0611-x
[4] 刘长建. GNSS电离层建模方法与质量控制研究[D]. 河南: 信息工程大学, 2011

Liu Changjian. Study on Modeling Method and Model Quality Control of Ionosphere Based on GNSS[D].Henan: Information Engineering University, 2011
[5] 袁运斌. 基于GPS的电离层监测及延迟改正理论与方法的研究[D]. 武汉: 中国科学院研究生院测量与地球物理研究所, 2002

Yuan Yunbin. Study on Theories and Methods of Correcting Ionospheric Delay and Monitoring Ionosphere Based on GPS[D].Wuhan: Institute of Geodesy and Geophysics, Chinese Academy of Sciences, 2002
[6] Schaer S. Mapping and Predicting the Earth's Ionosphere Using the Global Positioning System[D]. Switzerland: University of Bern, 1999
[7] Feltrns J, Schaer S. IGS Products for the Ionosphere[J]. Proceeding of the IGS Ac Workshop, 1998: 225-232 http://citeseerx.ist.psu.edu/viewdoc/summary?cid=25102061
[8] Feltens J. Development of a New Three-Dimensional Mathematical Ionosphere Model at European Space Agency/European Space Operations Centre[J]. Space Weather the International Journal of Researh & Applications, 2007, 5(5): 177-180 doi:  10.1029/2006SW000294/full
[9] Ghoddousi-Fard R, Héroux P, Danskin D, et al. Developing a GPS TEC Mapping Service over Canada[J]. Space Weather-The International Journal of Research & Applications, 2011, 9(6): 1-10 doi:  10.1029/2010SW000621
[10] Zhang H, Xu P, Han W, et al. Eliminating Negative VTEC in Global Ionosphere Maps Using Inequality-Constrained Least Squares[J]. Advances in Space Research, 2013, 51(6): 988-1 000 doi:  10.1016/j.asr.2012.06.026
[11] Hernández-Pajares M, Roma-Dollase D, Krankowski A, et al. Methodology and Consistency of Slant and Vertical Assessments for Ionosphere Electron Model[J]. Journal of Geodesy, 2017(2): 1-10 doi:  10.1007%2Fs00190-017-1032-z
[12] 章红平, 韩文慧, 黄玲, 等. 地基GNSS全球电离层延迟建模[J]. 武汉大学学报·信息科学版, 2012, 37(10): 1 186-1 189 http://ch.whu.edu.cn/article/id/355

Zhang Hongping, Han Wenhui, Huang Ling, et al. Modeling Global Ionospheric Delay with IGS Ground-based GNSS Obervations[J]. Geomatics and Information Science of Wuhan University, 2012, 37(10): 1 186-1 189 http://ch.whu.edu.cn/article/id/355
[13] Tang W M, Jin L, Xu K. Proformance Analysis of Ionsphere Moitoring with BeiDou CORS Observational Data[J]. Journal of Navigation, 2014, 67(3): 511-522 doi:  10.1017/S0373463313000854
[14] 张瑞. 多模GNSS实时电离层精化建模及其应用研究[D]. 武汉: 武汉大学, 2013

Zhang Rui. Theory and Method on Multimode GNSS Real-Time Refinement Ionospheric Modeling and Its Application[D]. Wuhan: Wuhan University, 2013
[15] 熊波, 万卫星, 宁百齐, 等. 基于北斗、GLONASS和GPS系统的中低纬度电离层特性联合探测[J]. 地球物理学报, 2014, 57(11): 3 586-3 599 doi:  10.6038/cjg20141112

Xiong Bo, Wan Weixing, Ning Baiqi, et al. Investigation of Mid-Latitude and Low-Latitude Ionosphere Based on BDS, GLONASS and GPS Observations[J]. Chinese Journal of Geophysics, 2014, 57(11): 3 586-3 599 doi:  10.6038/cjg20141112
[16] 张宝成, 欧吉坤, 李子申, 等. 利用精密单点定位求解电离层延迟[J]. 地球物理学报, 2011, 54(4): 950-957 doi:  10.3969/j.issn.0001-5733.2011.04.009

Zhang Baocheng, Ou Jikun, Li Zishen, et al. Determination of Ionospheric Observabels with Precise Point Positioning[J]. Chinese Journal of Geophysics, 2011, 54(4): 950-957 doi:  10.3969/j.issn.0001-5733.2011.04.009
[17] 李玮, 程鹏飞, 秘金钟. 利用非组合精密单点定位提取区域电离层延迟及其精度评定[J]. 武汉大学学报·信息科学版, 2011, 36(10): 1 200-1 203 http://ch.whu.edu.cn/article/id/695

Li Wei, Cheng Pengfei, Bi Jinzhong. Regional Ionosphere Delays'Calibration and Accuracy Assessment Based on Uncombined Precise Point Positioning[J]. Geomatics and Information Science of Wuhan University, 2011, 36(10): 1 200-1 203 http://ch.whu.edu.cn/article/id/695
[18] Rovira-Garcia A, Juan J M, Sanz J, et al. A Worldwide Ionosphere Model for Fast Precise Point Positioning[J]. IEEE Transactions on Geoscience & Remote Sensing, 2015, 53(8): 4 596-4 604 http://ieeexplore.ieee.org/document/7053952/references
[19] 房成贺. GNSS硬件延迟解算及实时电离层延迟改正方法研究[D]. 南京: 河海大学, 2017

Fang Chenghe. Research on GNSS Differential Code Bias and Real-time Ionospheric Delay Correction Calculation[D]. Nanjing: Hohai University, 2017
[20] 章红平, 高周正, 牛小骥, 等. GPS非差非组合精密单点定位算法研究[J]. 武汉大学学报·信息科学版, 2013, 38(12): 1 396-1 399 http://ch.whu.edu.cn/article/id/2833

Zhang Hongping, Gao Zhouzheng, Niu Xiaoji, et al. Research on GPS Precise Point Positioning with Un-differential and Un-combined Observations[J]. Geomatics and Information Science of Wuhan University, 2013, 38(12): 1 396-1 399 http://ch.whu.edu.cn/article/id/2833
[21] Zhou Feng, Dong Danan, Li Pan, et al. Influence of Stochastic Modeling for Intersystem Biases on MultiGNSS Undiferenced and Uncombined Precise Point Positioning[J]. GPS Solutions, 2019, 23(3): 59-65 doi:  10.1007/s10291-019-0852-0
[22] 肖玉钢, 王峥, 陈华, 等. 法方程叠加的多模GNSS双差精密算法[J]. 测绘通报, 2018(10): 88-92 https://www.cnki.com.cn/Article/CJFDTOTAL-CHTB201810020.htm

Xiao Yugang, Wang Zheng, Chen Hua, et al. A Precise Multi-GNSS Data Processing Algorithm with Double Difference Observations Based on the Normal Equation Stacking Technique[J]. Bulletin of Surveying and Mapping, 2018(10): 88-92 https://www.cnki.com.cn/Article/CJFDTOTAL-CHTB201810020.htm
[23] 张辉, 郝金明, 刘伟平, 等. 估计接收机差分码偏差的GPS/BDS非组合精密单点定位模型[J]. 武汉大学学报·信息科学版, 2019, 44(4): 495-500, 592 doi:  10.13203/j.whugis20170119

Zhang Hui, Hao Jinming, Liu Weiping, et al. GPS/BDS Precise Point Positioning Model with Receiver DCB Parameters for Raw Observations[J]. Geomatics and Information Science of Wuhan University, 2019, 44(4): 495-500, 592 doi:  10.13203/j.whugis20170119
[24] 付伟, 姚顽强, 陈鹏, 等. 基于多项式的区域电离层建模精度分析与验证[J]. 北京测绘, 2018, 32(10): 1 219-1 225 https://www.cnki.com.cn/Article/CJFDTOTAL-BJCH201810024.htm

Fu Wei, Yao Wanqiang, Chen Peng, et al. Polynomial Based Accuracy and Validation of Regional Ionospheric Modeling[J]. Beijing Surveying and Mapping, 2018, 32(10): 1 219-1 225 https://www.cnki.com.cn/Article/CJFDTOTAL-BJCH201810024.htm
[25] Zhou Feng, Dong Danan, Li Weiwei, et al. GAMP: An Open-Source Software of Multi-GNSS Precise Point Positioning Using Undifferenced and Uncombined Observations[J]. GPS Solutions, 2018, 22 (2): 1-10 http://smartsearch.nstl.gov.cn/paper_detail.html?id=136b66966a20eff09edb091a70187768
[26] 周承松, 彭月, 张小红, 等. 精密单点定位收敛时间的确定方法研究[J]. 导航定位学报, 2016, 4(1): 80-87 https://www.cnki.com.cn/Article/CJFDTOTAL-CHWZ201601016.htm

Zhou Chengsong, Peng Yue, Zhang Xiaohong, et al. A Study of Method in Determining the Precise Point Positioning Convergence Time[J]. Journal of Navigation and Positioning, 2016, 4(1): 80-87 https://www.cnki.com.cn/Article/CJFDTOTAL-CHWZ201601016.htm