International GNSS Service: Wuhan Workshop 2018

Plenary #1

Analysis Centres and Reference Frames

Session Convenors: Thomas Herring, Paul Rebischung, Michael Moore

  • Moore Overview of workshop, performance of IGS products, upcoming reprocessing effort, potential models
  • Schaer et al. New ambiguity-fixed IGS clock analysis products at CODE
  • Personaz et al. Galileo un-differenced "integer" products: method, results and perspectives
  • Rebischung et al. Aperiodic surface mass transport observed in GRACE and GNSS time series
  • Shi et al. Investigation of draconitic errors in IGS second reprocessed products at WHU
  • Wang et al. Impact of data break on the uncertainty of GNSS site velocity estimate
  • Poster #1

    Analysis Centres:

  • Jan Dousa New developments at GOP Analysis Center
  • Rengui Ruan Between-satellite single-difference integer ambiguity resolution in the SPODS software
  • Sylvain LOYER CNES/CLS IGS Analysis center: recent activities
  • Tao Li Precise satellite clock estimation for GPS, GLONASS, BeiDou and Galileo using the Australian Analysis Centre Software
  • Tim Springer The ESA/ESOC Analysis Centre progress and improvements
  • Rolf Dach et al. Activities at the CODE Analysis Center
  • Poster #2

    Reference Frame:

  • Paul Ries Status of IGS14 reprocessing at the JPL IGS Analysis Center
  • Pu Li Least Squares Cubic Splines for the Polar Motion Estimations
  • Jianqing Cai Converted Total Least Squares method and Gauss-Helmert model with applications to 3-D coordinate transformations of ITRF series
  • Recommendations

    AC and Reference Frame Recommendations

    Plenary #2

    Orbit Modelling

    Session Convenors: Rolf Dach, Tim Springer

  • Qiuli Chen Orbit determination and solar radiation pressure analysis of BDS satellite
  • Qiang Zhang Optimized Strategies for Precise Orbit Determination of Low Earth Orbiters Based on BDS
  • Florian Dilssner et al. Initial Orbit Determination of Third-Generation BeiDou MEO Spacecraft
  • Satoshi Ikari et al. Precise orbit determination of QZSS satellites with high-fidelity non-gravitational disturbance model
  • S. Lauren McNair et al. Validation of boxwing models for GNSS satellites
  • Inga Selmke et al. Improved Precise Orbit Determination by modelling of highly accurate clocks
  • Poster #3

    Orbit Modelling:

  • Tzupang Tseng Impact of solar radiation pressure mis-modelling on GNSS satellite orbit determination
  • Thomas Papanikolaou Impact of empirical parameters on GNSS orbit prediction through numerical integration
  • Bingbing Duan The Adjusted Optical Properties of GNSS Satellites and Applications in Precise Orbit Determination and Prediction
  • Yongqiang Yuan Improving precise orbit and clock determination for BeiDou-3, Galileo and QZSS with satellite metadata
  • Jiaqi Wu Precise orbit and clock determination using zero-differenced ambiguity resolution for GPS, Galileo, BDS and GLONASS
  • Benjamin Männel The impact of atmospheric and hydrological surface loading corrections on GNSS orbits
  • Aurore Sibois A multi-year reanalysis of GPS Block II/IIA and IIF satellite yaw maneuvers by means of reverse kinematic point positioning technique
  • Sungpil Yoon Solar Radiation Pressure Model Performance Test Using GNSS Precise Ephemeris
  • Chao Hu Accuracy analysis of the observed GNSS ultra-rapid orbit and its correction
  • Dmitry Sidorov et al. Improved orbit modelling of Galileo satellites during eclipse seasons
  • Junping Chen Orbit/Clock decorrelation approach for precise dynamic orbit determination
  • Wen Huang Orbit improvement based on combined processing of GPS and LEO
  • Jing Qiao Continuous Precise Ephemerides for Beidou GEO/IGSO Maneuvered Satellites
  • Recommendations

    Space Vehicle Orbit Dynamics Working Group Recommendations

    Plenary #3


    Session Convenors: Rosa Pacione, Sharyl Byram

  • R. Pacione Introduction to session and TWG activities
  • G. Dick et al. Multi-GNSS Activities for Atmosphere Sounding at GFZ
  • S. Zhang et al. Impact of second-order ionospheric delays on troposphere ZWD estimation with GPS and BeiDou measurements
  • J. Wang et al. GCOS Reference Upper Air Network (GRUAN) GNSS Precipitable Water Product
  • M. Kačmařík et al. On the estimation and use of GNSS tropospheric gradients for meteorological applications
  • Karina Wilgan Tropospheric path delays derived from very high-resolution GNSS-based troposphere models and spaceborne SAR interferometry
  • Zhizhao Liu GPS Water Vapor Data to Improve Water Vapor Retrieval from MERSI/FY-3B Remote Sensing Satellite
  • Poster #4
  • Xiaoming Wang Atmospheric sounding with ground-based, satellite-based and balloon-based GNSS for climate and meteorology study
  • Vladimir Suvorkin Comparison of zenith troposphere delay from different techniques
  • Han Tan Integrating high-, medium- and low-earth orbit navigation satellite constellations to retrieve atmospheric water vapor
  • Yuxin Zheng Assimilation of GNSS zenith total delay in the weather research and forecasting model: a case study
  • Zhiyu Zhang Impact of high-order ionospheric effects on estimated tropospheric parameters with GPS data
  • PETER DAMIAN ENUKA Analysis and comparison of tropospheric scintillation prediction models at Ogun University
  • Tong Ning Trends in the atmospheric water vapour estimated using different elevation-angle-dependent parameters in the GPS
  • Zhigui Kang GNSS-based precise troposphere zenith path delay determination with high temporal resolution
  • Kefei Zhang GNSS+ Tropospheric Sounding for Weather and Climate – An Australian Perspective
  • Recommendations

    Troposphere Working Group Recommendations

    Plenary #4

    Infrastructure Committee, RINEX, Data Centres

    Session Convenors: Nacho Romero. Ken Macleod, Carey Noll

  • I. Romero et al IGS Infrastructure Status and Challenges
  • Jiang et al Challenges and Opportunities of GNSS Reference Station Network
  • Laura García et al GNSS Science Service Centre (GSSC)
  • Ryan Ruddick Improving the efficiency of GNSS data streaming within the IGS
  • Banville et al Updates to the CSRS-PPP online service
  • Poster #5
  • Jan Douša New procedures for GNSS data dissemination within the European Plate Observing System
  • Laurent JOLIVET REGINA a CNES/IGN worldwide GNSS receivers network for IGS and navigation
  • Ryan Ruddick Discovering the Geoscience Australia GNSS Data Repository
  • Markus Ramatschi GFZ GNSS Infrastructure and the Global reference Station Network
  • Carey Noll NASA CDDIS: Important Changes to User Access
  • Ignacio Romero EGON: The ESA/ESOC GNSS Observation station Network
  • Markus Bradke Status Quo of the new GFZ Operational Data Center
  • Kevin Choi Foundation CORS - The backbone of the U.S. National Spatial Reference System
  • Laura Sanchez SIRGAS: 25 years providing the geodetic infrastructure in Latin America
  • Recommendations

    IC/DC/RINEX Working Group Recommendations

    Plenary #5

    Timing and Biases

    Session Convenors: Stefan Schaer, Michael Coleman

  • Bingbing Duan et al. Phase Biases of GPS L1/L2/L5 for the Purpose of Zero-difference Ambiguity Resolution and Initial Results on Galileo E1/E5a
  • Jianghui Geng Phase bias product in the bias-SINEX format and open-source software for undifferenced ambiguity resolution at Wuhan University
  • Lin Pan et al. Estimating a set of IFCBs to make IGS ionospheric-free clock product compatible with various triple-frequency PPP models
  • Yoaz Bar-Sever et al. What to do about Flex Power
  • Jean-Marie Sleewaegen et al. Quantifying the pilot-data bias on all current GNSS signals and satellites
  • Poster #5


  • Tengzhou Ma FY-3D and FY-3C Onboard Observations for DCB Estimation: BDS and GPS DCBs
  • Yun Xiong Fast estimation of real-time high-frequency precise satellite clock offset using multi-frequency and multi-constellation GNSS observations
  • Yintong Wang Differential code bias estimation with ionosphere constrained by DESIGN
  • Yuanxin Pan GLONASS phase bias products in the bias-SINEX format at Wuhan University: Differential code-phase bias
  • Xiaopeng Gong Long-term characteristics analysis and modeling of GPS/BDS inter-frequency clock bias
  • Ningbo Wang Multi-GNSS code bias handling: an observation-specific perspective
  • Wei Xie Performance evaluation of GLONASS on-board atomic clock in long-term
  • Xuhai Yang Precise Common View Time and Frequency Transfer based on BDS GEO satellites

  • Poster #7


  • Lin Zhu Galileo In-Orbit Satellite Clocks Performance and System Time Offset Assessment
  • Cheng Mengfei Analysis on Prediction Characteristics of time offsets in GNSS
  • B. Sun et al. Timing performance evaluation of BDS-3 early constellation using receivers located in time laboratories
  • Wei Xie Performance evaluation of GLONASS on-board atomic clock in long-term
  • Xuhai Yang Precise Common View Time and Frequency Transfer based on BDS GEO satellites

  • Plenary #6

    MGEX and IGMA

    Session Convenors:Oliver Montenbruck, Urs Hugentobler

  • Oliver & Urs Introduction by session chairs
  • P. Sakic et al. Toward a Multi-Constellation combination : Improving the IGS orbits & clocks combination software for MGEX products.
  • J. Guo et al. Towards instantaneous PPP initialization in case of triple-frequency multi-GNSS data
  • S. Strasser et al. Multi-frequency and multi-GNSS processing with the raw observation approach
  • B. Wang et al. Signal-in-space Accuracy Analysis for BDS in 2016-2017
  • S. Song et al. Progress on the ICG IGMA Task Force activities and joint Trial Project with IGS
  • Poster #8


  • G. Katsigianni et al. Improving Galileo orbit determination using zero-difference ambiguity fixing in a Multi-GNSS processing
  • T. Liu et al. Multi-GNSS triple-frequency Differential Code Bias (DCB) determination with Precise Point Positioning (PPP)
  • G. Xiao et al. Multi-frequency PPP ambiguity resolution tested with Galileo/BDS triple-frequency observations
  • A. Sibthorpe et al. Hourly orbit and clock solutions for GPS, GLONASS, BeiDou, and Galileo with analysis of added value
  • K. Zhang et al. Integrated precise orbit determination of FY-3C, FY-3D, BDS and GPS
  • F. Ma et al. LEO constellation augmented multi-GNSS precise positioning: heterogeneous constellation design and frequency selection
  • Y. Wang et al. Frequency Stability Analysis of BDS Satellite Clocks Under the Condition of Multi-satellite Orbit Determination
  • I. Selmke et al. Status of the TUM MGEX orbit and clock products
  • M. Wu et al. Galileo real-time satellite clocks generation based on connection of short-arc observation files
  • Y. Wang et al. The Analysis of BDS2/BDS3 Combined Precise Orbit Determination Strategy
  • Y. Zhang et al. QZSS signal in space range error, differential inter-system bias and inter-frequency clock bias analysis
  • B. Stressler et al. An Assessment of the Accuracy of Broadcast Ephemerides for Multi-GNSS Positioning
  • Z. Deng et al. The improvement of multi-GNSS orbit and clock at GFZ
  • X. Li et al. PPP rapid ambiguity resolution with LEO constellation augmented GNSS
  • L. Prange et al. An empirical SRP model for the orbit normal attitude mode
  • Recommendations

    MGEX Working Group Recommendations

    Poster #9


  • Q. Zhang et al. A Preliminary Assessment on Continuity and Availability of Signal-In-Space for Multi-GNSS: From 2015 to 2016
  • M. Dähnn et al. Galileo SISRE analysis with Where
  • I. Rodríguez GMV’s Preliminary Results of its contribution to IGMA-IGS Joint Trial Project
  • J. F. Galera Monico et al. \São Paulo State University contribution to the IGMA Trial Project – PDOP and broadcast ephemeris accuracy assessment
  • Recommendations

    IGMA Working Group Recommendations

    Plenary #7


    Session Convenors: Arturo Villiger, Florian Dilssner

  • Arturo & Florian Introduction by session chairs
  • Z. Hu et al. Field Absolute Calibration of the BDS Receiver Antenna at Wuhan
  • D. Willi et al. Multi-GNSS Absolute Antenna Field Calibration with a Robot at ETH Zurich
  • Xingyuan Yan Estimation of antenna phase center offset for BDS IGSO and MEO satellites
  • A. Villiger et al. Consistency antenna products in the MGEX environment
  • Poster #10
  • Susanne Beer Group Delay Variations of Galileo Satellite Antennas
  • Rolf Dach Estimating Satellite Antenna Calibration in a Multi-GNSS Environment
  • Andria Bilich 6-axis robot for absolute antenna calibration at the US National Geodetic Survey
  • Recommendations

    Antenna Working Group Recommendations

    Plenary #8


    Session Convenor: Andrzej Krankowski

  • Michael Schmidt High-precision and high-resolution VTEC maps based on B-spline expansions and GNSS data
  • Zishen Li CAS Ionosphere Associate Analysis Center: Status report
  • German Olivares Impact of strong space weather conditions on GNSS-based navigation
  • Jens Berdermann Ionospheric research and service based on near real time GNSS data
  • Adam Froń Climate VTEC maps in cooperation of IGS’ GNSS and GIRO sensor networks as a step towards VTEC assimilation into IRI
  • Shuli Song Regional Ionospheric Irregularities Mapping at Different Temporal Scales Using GNSS Networks and Its Applications
  • Poster #11
  • Manuel Hernández-Pajares POLarGIMs: Time evolution of vertical electron content distribution in polar ionosphere from UPC-GIM TOMION runs
  • Zishen Li Modeling real-time global ionospheric TEC map based on the spare and uneven distributed multi-GNSS stations
  • Ningbo Wang RROT: a new ionosphere activity index for ionospheric irregularity monitoring
  • Wenfeng Nie Ionospheric observable: benefit from PPP and PPP-AR
  • Kacper Kotulak A long-term ionospheric dynamics and fluctuations study in a local frame
  • Iurii Cherniak The IGS ROTI Map product: scientific applications and development
  • Leszek Błaszkiewicz Ionospheric scintillation monitoring with Bałdy LOFAR station
  • JIANG YI The effect of solar storm to ionosphere and user’s position of BDS
  • Sandra Blevins Survey of solar flare signatures in the upper ionosphere with GNSS and GOES observations: a case study
  • Chen Liu Regional Mean Electron Content: A new conception to track regional ionosphere activity
  • Haixia Lyu A hybrid of Abel inversion and Vary-Chap model to reconstruct RO electron density profile
  • João Francisco Galera Monico GNSS NavAer network for supporting Ionospheric Studies in Brazil
  • Longxia XU Development and improvement of BDS single frequency ionospheric model
  • Weili Zhou Application of GNSS-based Ionosphere TEC Model in CE-4
  • NA Cheng Influence of Solar Activities on GNSS Broadcast Ionospheric Models in the Asia-Pacific region
  • Yang Liu Studying Ionosphere Responses to a Geomagnetic Storm in June 2015 with Multi-Constellation Observations
  • Kunjuan Zhao Ionosphere continuous monitoring based on BDS GEO satellites measurements

  • Plenary #9


    Session Convenors: Axel Ruelke and Qile Zhao

  • André Hauschild Recent Developments of DLR’s Real-Time Clock Estimation (RETICLE) Engine
  • Wolfgang Söhne Precise point positioning of surveying vessel in the Baltic Sea
  • Ningbo Wang Benefits of IGS RTS for real time ionospheric space weather monitoring
  • Xinghan Chen The impact of higher order ionospheric corrections on ultra-rapid orbit determination
  • Shengfeng Gu FUSING: a distributed software platform for real-time high precision multi-GNSS service
  • Jing Guo Real-time orbit and clock products at Wuhan University to support Multi-GNSS application
  • Poster #12
  • Yishuai Shi Performance Assessment of BDS Real-Time Precise Point Positioning Based on SSR Corrections
  • Pavel Vaclavovic Real-time GNSS data quality control
  • JOÃO FRANCISCO GALERA MONICO Assessing the ambiguity time convergence as function of constraints in the station coordinates and vice versa
  • Jiaxin Huang Research progress of multi-GNSS PPP-RTK technology
  • Hongbo Lv LEO constellation augmented GPS RTK positioning for medium-to-long baselines
  • Liang Wang Real-time un-differenced precise positioning for Android smartphones
  • Mingyu Kim Prediction of IGS RTS Correction Data using Machine Learning Algorithms
  • Sandra Blevins Progress and improvements in real-time services at NASA GSFC CDDIS
  • Denis Laurichesse Real-time implementation of instantaneous PPP convergence using the E6 Galileo signal
  • Xin Shaoming A real-time integrated GNSS/Accelerometer network and processing engine for earthquake early warning in Yunan, China
  • Wang Le Technology of BDS Real-time Precise Orbit Determination Enhanced by LEOs
  • Rongxin Fang A new method of integrating GPS and strong-motion data for real-time seismology
  • Yunbin Yuan Development of real time multi-GNSS precise positioning system at IGG
  • QinMing Chen Initial accuracy analysis of real-time products of multi-GNSS from Shanghai Astronomical Observatory AC of iGMAS
  • Manuel Hernández-Pajares Looking for optimal ways to combine global ionospheric maps in real-time

  • Plenary #10

    Science Applications

    Session Convenors: Jianghui Geng, Fred Blume

  • Zheng et al Crustal deformation in the Kunlun Fault region from long-term GPS measurements
  • Kawamoto et al Real-time coseismic fault model estimation based on RTK-GNSS analysis in Japan
  • Fernandes (Bos et al) The Effect of Colored Noise on Automatic Offset Detection in GNSS Time Series
  • Wickert et al GNSS-Reflectometry for Earth Observation: History, Results and Prospects
  • Kuang et al Observing geocenter motion from LEO POD using onboard GPS tracking data
  • Ge et al Retrieving and Validating Precipitable Water Vapor from Shipborne GNSS Observation using Ground-based and Space-borne Data
  • Poster #13
  • Iurii Golubinka GCS (General Commission for Survey, Riyadh, KSA) Data & Analysis Centre – the results of processing the data from GNSS CORS network in Saudi Arabia
  • Erdenezul Danzansan GNSS geodetic networks development in Mongolia and Its Application in Geodynamic Study
  • Jian Wang Research on Extracting Common Mode Error in GPS Network using Principal Component Analysis
  • Alvaro Santamaria-Gomez On the spatial correlation of colored noise in GPS position time series
  • Qingchen Zhang Robust fractal analysis and automatic singular points detection of IGS station coordinates time series
  • Bin Liu Estimate Terrestrial Water Storage variations in Sichuan-Yunnan Region from GPS observations
  • Daniel Arnold et al. Undifferenced ambiguity resolution for GPS-based precise orbit determination of low Earth orbiters using the new CODE clock and phase bias products
  • Pacôme Delva A gravitational redshift test using eccentric Galileo satellites
  • Renli Liu Vertical Displacements Driven by Groundwater Storage Changes in the North China Plain Detected by GPS Observations
  • Rong Zou The Research on Common Mode Errors in GNSS Time Series Using Geographically Weighted Principal Component Analysis
  • YANMING FENG GNSS Fog stations supporting Internet of Things applications: concepts, framework and use case studies
  • Weixing Zhang Homogenized Ground-based GPS precipitable water products from 1999 to 2015 over China and evaluations of radiosondes and reanalyses
  • Qi Liu Onshore GNSS Used for Monitoring Tidal Variations

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