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Risk overbounding for ionospheric gradient monitor using geometry-free double differenced carrier phase measurements
Ionosphere anomaly can cause large spatial gradients in the double-differenced carrier phase (DDCP) measurements. Taking advantage of this...
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Gauss process regression for real-time ionospheric delay estimation from GNSS observations
The number of devices equipped with global satellite positioning has exceeded seven billion recently. There are a wide variety of receivers regarding...
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Estimation of tropospheric wet refractivity using tomography method and artificial neural networks in Iranian case study
Using the observations from local and regional GPS networks, the estimation of slant wet delays (SWDs) is possible for each line of sight between...
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An improved GNSS tropospheric tomography method with the GPT2w model
The GNSS tropospheric tomography technique has been proven to be a powerful tool for three-dimensional water vapor reconstruction. In most previous...
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A comparison of two PPP-RTK models: S-basis choice, network product precision, and user positioning performance
PPP-RTK combines the advantages of both precise point positioning (PPP) and real-time kinematic (RTK) techniques. While constructing PPP-RTK models...
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An improved BDS-3 PPP-B2b positioning approach by estimating signal in space range errors
In 2020, BeiDou global navigation satellite system (BDS-3) officially launched a real-time precise point positioning (PPP) service via the B2b signal...
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A two-step non-nominal troposphere monitor for GBAS
The non-nominal troposphere caused by hazardous horizontal tropospheric gradients poses a threat to the integrity of the safety–critical civil...
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Assessing partial ambiguity resolution and WZTD-constraint multi-frequency RTK in an urban environment using new BDS signals
BeiDou Navigation Satellite System (BDS) began to provide global services of positioning, navigation, and timing on July 31, 2020. The Real-time...
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Comparison of the Integral Water Vapor Content of the Atmosphere by Data of the Global Forecast System (GFS) and GNSS Observations (Primorski Krai, Russia)
AbstractThe article analyzes the integral atmospheric water content by data of continuous GPS/GLONASS observations over 2017–2019 at 13 observation...
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Satellite laser ranging to GNSS-based Swarm orbits with handling of systematic errors
Satellite laser ranging (SLR) retroreflectors along with GNSS receivers are installed onboard numerous active low earth orbiters (LEOs) for the...
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A new large-area hierarchical PPP-RTK service strategy
Introducing precise atmosphere information into precise point positioning enables rapid ambiguity resolution and introduces a significant accuracy...
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Estimating GNSS satellite clock error to provide a new final product and real-time services
A method is introduced to directly estimate the model coefficients of global navigation satellite system (GNSS) satellite clock errors using global...
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Establishing a high-precision real-time ZTD model of China with GPS and ERA5 historical data and its application in PPP
A high-precision real-time troposphere model is constructed by combining ground-based GNSS observation data and the latest European Centre for...
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Exploring the role of PPP–RTK network configuration: a balance of server budget and user performance
With atmospheric corrections generated from the server, precise point positioning real-time kinematic (PPP–RTK) can achieve high-precision solutions...
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Diurnal variability of atmospheric water vapour, precipitation and cloud top temperature across the global tropics derived from satellite observations and GNSS technique
The diurnal cycle of convection plays an important role in clouds and water vapour distribution across the global tropics. In this study, we utilize...
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Continuous estimation of coseismic and early postseismic slip phenomena via the GNSS carrier phase to fault slip approach: a case study of the 2011 Tohoku-Oki sequence
The transition process from coseismic to early postseismic phenomena within a half-day remains a significant topic for understanding the slip budget...
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Climate Impacts: Impacts of Ozone on Southern Hemisphere Climate
This chapter reviews climate response to long-term changes in stratospheric ozone due to human activity. Human-induced stratospheric ozone depletion...
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Modified atmospheric pressure extrapolation model using ERA5 for geodetic applications
Atmospheric pressure is a widely used meteorological parameter, and surface pressure at antenna height is one of the most important parameters for...
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Realizing rapid re-convergence in multi-GNSS real-time satellite clock offset estimation with dual-thread integer ambiguity resolution
Real-time satellite clock offsets are key in realizing real-time precise point positioning (PPP). Typically, tens of minutes are required for...
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Tropical cyclone-induced periodical positioning disturbances during the 2017 Hato in the Hong Kong region
The tropospheric delay is an important error source in the Global Positioning System (GPS) positioning and navigation applications. Although most of...
