OOIR: Observatory of International Research

Papers

(The H4-Index of GPS Solutions is 28. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-09-01 to 2025-09-01.)

Article	Citations
M_IFCB: a MATLAB-based software for multi‑GNSS inter‑frequency clock bias estimation and forecast	96
Vehicle mounted single-antenna GNSS spoofing detection method based on motion trajectory	91
Rigorous and fast constraints transformations at the solution level: case studies for regional and global GNSS networks	91
Attitude estimation in challenging environments by integrating low-cost dual-antenna GNSS and MEMS MARG sensor	77
M_FCB: an open‑source software for multi‑GNSS fractional cycle bias estimation	60
Performance assessment of GNSS-IR altimetry using signal-to-noise ratio data from a Huawei P30 smartphone	54
STL-GT: graph-structured learning based transformer for GNSS positioning enhancement in urban environments	53
A weighted mean temperature (Tm) augmentation method based on global latitude zone	47
Robust train length calculation and monitoring method using GNSS multi-constellation moving-baseline positioning resolution	47
Modeling of regional GNSS network using adaptive boosting algorithm: a case study in the Xinjiang Uyghur Autonomous Region	41
High-precision velocity determination using mass-market Android GNSS measurements in the case of anomalous clock variations	40
Toward BDS/Galileo/GPS/QZSS triple-frequency PPP instantaneous integer ambiguity resolutions without atmosphere corrections	36
Filter and piecewise smoother on the matrix Lie group	35
Tropospheric parameters from multi-GNSS and numerical weather models: case study of severe precipitation and flooding in Germany in July 2021	35
Interannual variability of vertical land motion over High Mountain Central Asia from GPS and GRACE/GRACE-FO observations	34
Non-holonomic constraint (NHC)-assisted GNSS/SINS positioning using a vehicle motion state classification (VMSC)-based convolution neural network	34
Multipath error extraction and mitigation based on refined wavelet level and threshold selection	34
Optimization of undifferenced and uncombined PPP stochastic model based on covariance component estimation	33
Enhancing smartphone-based vehicle navigation in deep urban areas using machine learning-aided PPP-RTK	32
GNSS performance degradation under meaconing in civil aviation: pseudorange and position models	31
Optimization design of two-layer Walker constellation for LEO navigation augmentation using a dynamic multi-objective differential evolutionary algorithm based on elite guidance	29
Adaptive displacement extraction from GNSS kinematic positioning using interactive multi-model Kalman filter	29
Design of a miniaturized geodetic-grade GNSS reference antenna covering Bs band	29
Observations and positioning quality of low-cost GNSS receivers: a review	29
Pseudorange characteristics of soil-transmitted GNSS signals and their application in soil moisture content retrieval	28

Multipath mitigation in GNSS precise point positioning using multipath hierarchy for changing environments	28
Rapid detection of GNSS time synchronization attacks via the enhanced code and carrier Doppler consistency test	28
GNSS-RTK model: common-frequency versus mixed-frequency	28
POSGO: an open-source software for GNSS pseudorange positioning based on graph optimization	28