GPS Solutions

Article	Citations
Real-time GNSS precise point positioning for low-cost smart devices	73
A new IMU-aided multiple GNSS fault detection and exclusion algorithm for integrated navigation in urban environments	72
Performance evaluation of BDS-3 PPP-B2b precise point positioning service	69
New time-differenced carrier phase approach to GNSS/INS integration	65
Initial Assessment of the BDS-3 PPP-B2b RTS compared with the CNES RTS	60
Past, present and future of atomic clocks for GNSS	56
Ionosphere-weighted undifferenced and uncombined PPP-RTK: theoretical models and experimental results	52
Galileo high accuracy service: initial definition and performance	50
GREAT-UPD: An open-source software for uncalibrated phase delay estimation based on multi-GNSS and multi-frequency observations	44
Multi-constellation GNSS PPP instantaneous ambiguity resolution with precise atmospheric corrections augmentation	42
Pseudorange error prediction for adaptive tightly coupled GNSS/IMU navigation in urban areas	41
Precise point positioning with GPS and Galileo broadcast ephemerides	41
Optical clock technologies for global navigation satellite systems	40
A global grid model for the correction of the vertical zenith total delay based on a sliding window algorithm	38
Enhancing navigation performance through visual-inertial odometry in GNSS-degraded environment	37
JUST: MATLAB and python software for change detection and time series analysis	37
BeiDou-3 broadcast clock estimation by integration of observations of regional tracking stations and inter-satellite links	36
Sub-10–16 accuracy GNSS frequency transfer with IPPP	35
Validation of GNSS-derived global ionosphere maps for different solar activity levels: case studies for years 2014 and 2018	35
Multipath mitigation in GNSS precise point positioning based on trend-surface analysis and multipath hemispherical map	34
Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal	34
GIMLi: Global Ionospheric total electron content model based on machine learning	31
LEO-constellation-augmented multi-GNSS real-time PPP for rapid re-convergence in harsh environments	30
PPP with integer ambiguity resolution for GPS and Galileo using satellite products from different analysis centers	30
POD of small LEO satellites based on precise real-time MADOCA and SBAS-aided PPP corrections	28

GINav: a MATLAB-based software for the data processing and analysis of a GNSS/INS integrated navigation system	28
Impact of robot antenna calibration on dual-frequency smartphone-based high-accuracy positioning: a case study using the Huawei Mate20X	28
Ionospheric VTEC and satellite DCB estimated from single-frequency BDS observations with multi-layer mapping function	27
An open-source low-cost sensor for SNR-based GNSS reflectometry: design and long-term validation towards sea-level altimetry	27
Implementation and performance analysis of the PDR/GNSS integration on a smartphone	27
Feasibility of easy-to-implement methods to analyze systematic errors of multipath, differential code bias, and inter-system bias for low-cost receivers	26
A pulsed-Laser Rb atomic frequency standard for GNSS applications	26
Fusing denoised stereo visual odometry, INS and GPS measurements for autonomous navigation in a tightly coupled approach	25
Performance assessment of GNSS-based real-time navigation for the Sentinel-6 spacecraft	25
Precise orbit determination of BDS-3 satellites using B1C and B2a dual-frequency measurements	25
Effects of storm-induced equatorial plasma bubbles on GPS-based kinematic positioning at equatorial and middle latitudes during the September 7–8, 2017, geomagnetic storm	25
LEO Doppler-aided GNSS position estimation	24
An enhanced foot-mounted PDR method with adaptive ZUPT and multi-sensors fusion for seamless pedestrian navigation	24
Assessment of Galileo High Accuracy Service (HAS) test signals and preliminary positioning performance	24
Characteristics of receiver-related biases between BDS-3 and BDS-2 for five frequencies including inter-system biases, differential code biases, and differential phase biases	24
An investigation of PPP time transfer via BDS-3 PPP-B2b service	22
Editing arcs to improve the capacity of GNSS-IR for soil moisture retrieval in undulating terrains	22
Statistical characterization of the signal-in-space errors of the BDS: a comparison between BDS-2 and BDS-3	22
Code and phase multipath mitigation by using the observation-domain parameterization and its application in five-frequency GNSS ambiguity resolution	22
PPPLib: An open-source software for precise point positioning using GPS, BeiDou, Galileo, GLONASS, and QZSS with multi-frequency observations	22
On the potential contribution of BeiDou-3 to the realization of the terrestrial reference frame scale	21
Centimeter-accurate vehicle navigation in urban environments with a tightly integrated PPP-RTK/MEMS/vision system	21
Clock bias prediction algorithm for navigation satellites based on a supervised learning long short-term memory neural network	21
Probabilistic approach to detect and correct GNSS NLOS signals using an augmented state vector in the extended Kalman filter	21
Multi-constellation single-frequency ionospheric-free precise point positioning with low-cost receivers	21
A unified model of GNSS phase/code bias calibration for PPP ambiguity resolution with GPS, BDS, Galileo and GLONASS multi-frequency observations	21
BeiDou Global Ionospheric delay correction Model (BDGIM): performance analysis during different levels of solar conditions	20
Impact and mitigation of neglecting PPP-RTK correctional uncertainty	20
SUPREME: an open-source single-frequency uncombined precise point positioning software	20
A sequential ambiguity selection strategy for partial ambiguity resolution during RTK positioning in urban areas	20
GLONASS–only FDMA+CDMA RTK: Performance and outlook	20
Performance evaluation of the filters with adaptive factor and fading factor for GNSS/INS integrated systems	19
An improved global grid model for calibrating zenith tropospheric delay for GNSS applications	19
High-order ionospheric delay correction of GNSS data for precise reduced-dynamic determination of LEO satellite orbits: cases of GOCE, GRACE, and SWARM	19
Enhanced fault detection and exclusion based on Kalman filter with colored measurement noise and application to RTK	19
A linear Kalman filter-based integrity monitoring considering colored measurement noise	19
Revisiting Doppler positioning performance with LEO satellites	18
Characteristics of phase bias from CNES and its application in multi-frequency and multi-GNSS precise point positioning with ambiguity resolution	18
A new integrated method of GNSS and MODIS measurements for tropospheric water vapor tomography	18
Multi-GNSS real-time precise clock estimation considering the correction of inter-satellite code biases	18
Identifying the sensitivity of GPS to non-tidal loadings at various time resolutions: examining vertical displacements from continental Eurasia	18
Impact of the third frequency GNSS pseudorange and carrier phase observations on rapid PPP convergences	17
Precipitable water vapor fusion of MODIS and ERA5 based on convolutional neural network	17
Integrity monitoring scheme for undifferenced and uncombined multi-frequency multi-constellation PPP-RTK	17
Global forecasting of ionospheric vertical total electron contents via ConvLSTM with spectrum analysis	16
Baseline length constraint approaches for enhancing GNSS ambiguity resolution: comparative study	16
The long-term characteristics of GNSS signal distortion biases and their empirical corrections	16
An efficient parallel computing strategy for the processing of large GNSS network datasets	16
An efficient method for undifferenced BDS-2/BDS-3 high-rate clock estimation	16
Detection of replay attacks to GNSS based on partial correlations and authentication data unpredictability	16

Estimation and analysis of multi-GNSS observable-specific code biases	16
How modernized and strengthened GPS signals enhance the system performance during solar radio bursts	16
A deep fading assessment of the modernized L2C and L5 signals for low-latitude regions	15
Characteristics of the BDS-3 multipath effect and mitigation methods using precise point positioning	15
Comparison and evaluation of carrier phase PPP and single difference time transfer with multi-GNSS ambiguity resolution	15
A satellite-based method for modeling ionospheric slant TEC from GNSS observations: algorithm and validation	15
Multi-frequency phase-only PPP-RTK model applied to BeiDou data	14
Low-cost GPS/INS integration with accurate measurement modeling using an extended state observer	14
A global zenith tropospheric delay model with ERA5 and GNSS-based ZTD difference correction	14
Multipath extraction and mitigation for static relative positioning based on adaptive layer wavelet packets, bootstrapped searches and CNR constraints	14
Performance of BeiDou-3 signal-in-space ranging errors: accuracy and distribution	14
A new fuzzy strong tracking cubature Kalman filter for INS/GNSS	14
A multi-layer perceptron neural network to mitigate the interference of time synchronization attacks in stationary GPS receivers	14
Impact of Galileo-to-GPS-Time-Offset accuracy on multi-GNSS positioning and timing	14
Comparisons of CODE and CNES/CLS GPS satellite bias products and applications in Sentinel-3 satellite precise orbit determination	14
Spatio-temporal analysis of TEC during solar activity periods using support vector machine	14
A new simplified zenith tropospheric delay model for real-time GNSS applications	14
The GUARDIAN system-a GNSS upper atmospheric real-time disaster information and alert network	14
Motion model-assisted GNSS/MEMS-IMU integrated navigation system for land vehicle	14
Improving the (re-)convergence of multi-GNSS real-time precise point positioning through regional between-satellite single-differenced ionospheric augmentation	14
Broadcast ephemerides for LEO augmentation satellites based on nonsingular elements	13
Modeling wide-area tropospheric delay corrections for fast PPP ambiguity resolution	13
Indoor precise point positioning with pseudolites using estimated time biases iPPP and iPPP-RTK	13
A weighted mean temperature (Tm) augmentation method based on global latitude zone	13
BDS-3 and GPS/Galileo integrated PPP using broadcast ephemerides	13
Outliers and uncertainties in GNSS ZTD estimates from double-difference processing and precise point positioning	13
Monitoring and prediction of hurricane tracks using GPS tropospheric products	13
NLOS signal detection and correction for smartphone using convolutional neural network and variational mode decomposition in urban environment	13
A new model for vertical adjustment of precipitable water vapor with consideration of the time-varying lapse rate	13
Monitoring a storm surge during Hurricane Harvey using multi-constellation GNSS-Reflectometry	13
Detection and mitigation of GNSS spoofing via the pseudorange difference between epochs in a multicorrelator receiver	13
Assessing partial ambiguity resolution and WZTD-constraint multi-frequency RTK in an urban environment using new BDS signals	13
Full-ISL clock offset estimation and prediction algorithm for BDS3	13
Toward BDS/Galileo/GPS/QZSS triple-frequency PPP instantaneous integer ambiguity resolutions without atmosphere corrections	13
Estimation and analysis of GPS inter-fequency clock biases from long-term triple-frequency observations	12
Time–frequency analysis of the Galileo satellite clocks: looking for the J2 relativistic effect and other periodic variations	12
Integer ambiguity resolution and precise positioning for tight integration of BDS-3, GPS, GALILEO, and QZSS overlapping frequencies signals	12
Performance assessment of GNSS-IR altimetry using signal-to-noise ratio data from a Huawei P30 smartphone	12
Local ionospheric plasma bubble revealed by BDS Geostationary Earth Orbit satellite observations	12
Code multipath error extraction based on the wavelet and empirical mode decomposition for Android smart devices	12
LSTM-based short-term ionospheric TEC forecast model and positioning accuracy analysis	12
A comparative analysis of navigation signals in BDS-2 and BDS-3 using zero-baseline experiments	12
Joint time–frequency mask and convolutional neural network for real-time separation of multipath in GNSS deformation monitoring	12
Establishing a high-precision real-time ZTD model of China with GPS and ERA5 historical data and its application in PPP	12
A new global TEC empirical model based on fusing multi-source data	12
GNSS carrier phase time-variant observable-specific signal bias (OSB) handling: an absolute bias perspective in multi-frequency PPP	11
Interference mitigation: impact on GNSS timing	11
Interactive multiple-model vertical vibration detection of structures based on high-frequency GNSS observations	11
A new parallel algorithm for improving the computational efficiency of multi-GNSS precise orbit determination	11
Modeling seasonal oscillations in GNSS time series with Complementary Ensemble Empirical Mode Decomposition	11
Improved method for the GPS high-precision real-time satellite clock error service	11
Impact of solar radiation pressure models on earth rotation parameters derived from BDS	11
Enhanced solar radiation pressure model for GPS satellites considering various physical effects	11
A real-time cycle slip repair method using the multi-epoch geometry-based model	11
Single-frequency cycle slip detection and repair based on Doppler residuals with inertial aiding for ground-based navigation systems	11
Resilient GNSS real-time kinematic precise positioning with inequality and equality constraints	11
Common-mode error and multipath mitigation for subdaily crustal deformation monitoring with high-rate GPS observations	11
BDS and GPS side-lobe observation quality analysis and orbit determination with a GEO satellite onboard receiver	10
Frequency design of LEO-based navigation augmentation signals for dual-band ionospheric-free ambiguity resolution	10
GNSS best integer equivariant estimation combining with integer least squares estimation: an integrated ambiguity resolution method with optimal integer aperture test	10
Integrity monitoring for precise orbit determination of LEO satellites	10
Machine learning-based methods for sea surface rainfall detection from CYGNSS delay-doppler maps	10
Sub-nanosecond one-way real-time time service system based on UTC	10
HPL calculation improvement for Chi-squared residual-based ARAIM	10
Multipath mitigation in GNSS precise point positioning using multipath hierarchy for changing environments	10
Loss of lock on GNSS signals and its association with ionospheric irregularities observed over Indian low latitudes	10
Theoretical analysis of the multi-GNSS contribution to partial ambiguity estimation and R-ratio test-based ambiguity validation	10
Satellite laser ranging to GNSS-based Swarm orbits with handling of systematic errors	10
GNSS2TWS: an open-source MATLAB-based tool for inferring daily terrestrial water storage changes using GNSS vertical data	10
Machine learning-based snow depth retrieval using GNSS signal-to-noise ratio data	9
Evaluation of real-time variometric approach and real-time precise point positioning in monitoring dynamic displacement based on high-rate (20 Hz) GPS Observations	9
Research on modeling and predicting of BDS-3 satellite clock bias using the LSTM neural network model	9
Assessment of BDS-3 terrestrial reference frame realized by broadcast ephemeris: comparison with GPS/Galileo	9
Characteristics analysis and prediction of Low Earth Orbit (LEO) satellite clock corrections by using least-squares harmonic estimation	9
GIRAS: an open-source MATLAB-based software for GNSS-IR analysis	9
Benefits of operating multiple atomic frequency standards for GNSS satellites	9
Using GNSS radio occultation data to derive critical frequencies of the ionospheric sporadic E layer in real time	9
Real-time monitoring of GPS flex power based on machine learning	9
A study on the quality of GNSS signals for extracting the sea level height and tidal frequencies utilizing the GNSS-IR approach	9
A refined zenith tropospheric delay model for Mainland China based on the global pressure and temperature 3 (GPT3) model and random forest	9

Detection of synchronous spoofing on a GNSS receiver using weighed double ratio metrics	9
Establishment and assessment of a zenith wet delay (ZWD) augmentation model	9
GiRsnow: an open-source software for snow depth retrievals using GNSS interferometric reflectometry	9
First result of GNSS-R-based sea level retrieval with CMC and its combination with the SNR method	9
A method for precisely predicting satellite clock bias based on robust fitting of ARMA models	9
Topology design algorithm for optical inter-satellite links in future navigation satellite networks	9
A tropospheric delay model to integrate ERA5 and GNSS reference network for mountainous areas: application to precise point positioning	9
Feature-based GNSS positioning error consistency optimization for GNSS/INS integrated system	9
GNSS-based hardware-in-the-loop simulations of spacecraft formation flying with the global ionospheric model TIEGCM	9
GNSS water vapor tomography based on Kalman filter with optimized noise covariance	8
Carrier Doppler-based initial alignment for MEMS IMU/GNSS integrated system under low satellite visibility	8
Center strategies for universal transformations: modified iteration policy and two alternative models	8
Tropospheric parameters from multi-GNSS and numerical weather models: case study of severe precipitation and flooding in Germany in July 2021	8
Climatology of equatorial and low-latitude F region kilometer-scale irregularities over the meridian circle around 120°E/60°W	8
LEO augmented precise point positioning using real observations from two CENTISPACE™ experimental satellites	8
Real-time carrier observation quality control algorithm for precision orbit determination of LEO satellites	8
Precise orbit determination for the Haiyang-2D satellite using new onboard BDS-3 B1C/B2a signal measurements	8
A new method to estimate GPS satellite and receiver differential code biases using a network of LEO satellites	8
A multipath mitigation method in long-range RTK for deformation monitoring	8
Precise orbit determination of the Haiyang 2C altimetry satellite using attitude modeling	8
A weighted mean temperature model using principal component analysis for Greenland	8
Assessment of single-difference and track-to-track ambiguity resolution in LEO precise orbit determination	8
Robust state and protection-level estimation within tightly coupled GNSS/INS navigation system	8
Evaluation of earth rotation parameters from modernized GNSS navigation messages	8
Understanding the characteristic of GLONASS inter-frequency clock bias using both FDMA and CDMA signals	8
Complementing regional ground GNSS-STEC computerized ionospheric tomography (CIT) with ionosonde data assimilation	8
Factor graph optimization-based multi-GNSS real-time kinematic system for robust and precise positioning in urban canyons	8
An open-source software package for Precise Point Positioning: raPPPid	8
An INS-assisted vector tracking receiver with multipath error estimation for dense urban canyons	8
Conventional and neural network-based water vapor density model for GNSS troposphere tomography	8
From RTK to PPP-RTK: towards real-time kinematic precise point positioning to support autonomous driving of inland waterway vessels	8
A real-time inertial-aided cycle slip detection method based on ARIMA-GARCH model for inaccurate lever arm conditions	8
Recent flex power changes	8
Analyzing the contributions of multi-GNSS and INS to the PPP-AR outage re-fixing	8
Real-time states estimation of a farm tractor using dynamic mode decomposition	8
A study of equatorial plasma bubble structure using VHF radar and GNSS scintillations over the low-latitude regions	7
An improved BDS-3 PPP-B2b positioning approach by estimating signal in space range errors	7
Influence of flooding on GPS carrier-to-noise ratio and water content variation analysis: a case study in Zhengzhou, China	7
Updated GNSS velocity solution in the Nordic and Baltic countries with a semi-automatic offset detection method	7
Investigation into the nonlinear Kalman filter to correct the INS/GNSS integrated navigation system	7
Estimation of ionospheric total electron content using GNSS observations derived from a smartphone	7
A modified BDS Klobuchar model considering hourly estimated night-time delays	7
BDS signal-in-space anomaly probability analysis over the last 6 years	7
Three time spoofing algorithms for GNSS timing receivers and performance evaluation	7
Multi-frequency phase observable-specific signal bias estimation and its application in the precise point positioning with ambiguity resolution	7
Testing of general relativity with two Galileo satellites in eccentric orbits	7
M-estimation-based robust and precise baseline determination for formation-flying satellites	7
GPS satellite clock estimation using global atomic clock network	7
GHASP: a Galileo HAS parser	7
A high-precision ZTD interpolation method considering large area and height differences	7
A coalescent grid model of weighted mean temperature for China region based on feedforward neural network algorithm	7
Multi-GNSS real-time precise point positioning using BDS-3 global short-message communication to broadcast corrections	7
Statistical models to provide meaningful information to GNSS users in the presence of ionospheric scintillation	7
GNSS antispoofing method using the intersection angle between two directions of arrival (IA-DOA) for multiantenna receivers	7
Improved forward and backward adaptive smoothing algorithm	7
Ionospheric disturbances of the January 15, 2022, Tonga volcanic eruption observed using the GNSS network in New Zealand	7
Mitigation of multipath and NLOS with stochastic modeling for ground-based indoor positioning	7
Multi‑constellation GNSS interferometric reflectometry for the correction of long-term snow height retrieval on sloping topography	7
Modeling tropospheric zenith wet delays in the Chinese mainland based on machine learning	7
Characteristic differences in tropospheric delay between Nevada Geodetic Laboratory products and NWM ray-tracing	7
Bandwidth correction of Swarm GPS carrier phase observations for improved orbit and gravity field determination	6
A rapid convergent positioning algorithm based on projected cancellation technique for pseudolite positioning systems	6
Dynamic displacement monitoring by integrating high-rate GNSS and accelerometer: on the possibility of downsampling GNSS data at reference stations	6
Low-cost GNSS antennas in precise positioning: a focus on multipath and antenna phase center models	6
Design of a high-stability heterogeneous clock system for small satellites in LEO	6
Refined seismic-ionospheric effects: case study of Mw 8.2 Chiapas earthquake on September 7, 2017	6
ACES/PHARAO: high-performance space-to-ground and ground-to-ground clock comparison for fundamental physics	6
On the potential of undifferenced and uncombined GNSS time and frequency transfer with integer ambiguity resolution and satellite clocks estimated	6
Galileo high accuracy service performance and anomaly mitigation capabilities	6
Triple-frequency ambiguity resolution for GPS/Galileo/BDS between long-baseline network reference stations in different ionospheric regions	6
A unified cycle-slip, multipath estimation, detection and mitigation method for VIO-aided PPP in urban environments	6
An effective interpolation strategy for mitigating the day boundary discontinuities of precise GNSS orbit products	6
Initial performance assessment of Galileo High Accuracy Service with software-defined receiver	6
Robust unambiguous ranging technique for BDS-3 B1 wideband composite signals	6
Estimation of absolute GNSS satellite antenna group delay variations based on those of absolute receiver antenna group delays	6
Development of a GNSS-IR instrument based on low-cost positioning chips and its performance evaluation for estimating the reflector height	6
Machine learning-based approach to GPS antijamming	6
LAGRS-Veg: a spaceborne vegetation simulator for full polarization GNSS-reflectometry	6
BDS-3 SAR service and initial performance	6
GNSS PPP-RTK: integrity monitoring method considering wrong ambiguity fixing	6
High-precision velocity determination using mass-market Android GNSS measurements in the case of anomalous clock variations	6
Assessment of regularization techniques in GNSS tropospheric tomography based on single- and dual-frequency observations	6
Real-time precise point positioning based on BDS-3 global short message communication	6
Joint angle and delay estimation for GNSS multipath signals based on multiple sparse Bayesian Learning	6
An integrated INS/GNSS system with an attention-based hierarchical LSTM during GNSS outage	6
Ionosphere-weighted post-processing kinematic for airborne positioning with refined modeling of receiver phase biases and tropospheric zenith wet delays	6
Improving long-baseline rapid GPS time transfers by a modified common-view method	6
Improving estimates of ocean tide loading displacements with multi-GNSS: a case study of Hong Kong	6
Implementation of solution separation-based Kalman filter integrity monitoring against all-source faults for multi-sensor integrated navigation	6
Spatial outlier detection on discrete GNSS velocity fields using robust Mahalanobis-distance-based unsupervised classification	6
Improved atmospheric weighted mean temperature modeling using sparse kernel learning	6
Near-real-time GNSS tropospheric IWV monitoring system for South America	6
Two-step success rate criterion strategy: a model- and data-driven partial ambiguity resolution method for medium-long baselines RTK	6
A precipitation forecast model with a neural network and improved GPT3 model for Japan	6
A robust multi-constellation time-differenced carrier phase solution	6