OOIR: Observatory of International Research

Papers

(The H4-Index of GPS Solutions is 33. 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 2022-08-01 to 2026-08-01.)

Article	Citations
M_IFCB: a MATLAB-based software for multi‑GNSS inter‑frequency clock bias estimation and forecast	86
Optimization of undifferenced and uncombined PPP stochastic model based on covariance component estimation	81
MGAMNet: a multi-granularity aware and hierarchically mixed network for BDS-3 satellite clock bias prediction	76
Evaluation of uncalibrated phase delays estimated based on orbit determination, clock estimation, and precise point positioning	64
Filter and piecewise smoother on the matrix Lie group	58
M_FCB: an open‑source software for multi‑GNSS fractional cycle bias estimation	57
Robust train length calculation and monitoring method using GNSS multi-constellation moving-baseline positioning resolution	57
Modeling of regional GNSS network using adaptive boosting algorithm: a case study in the Xinjiang Uyghur Autonomous Region	57
STL-GT: graph-structured learning based transformer for GNSS positioning enhancement in urban environments	52
Vehicle mounted single-antenna GNSS spoofing detection method based on motion trajectory	52
Toward BDS/Galileo/GPS/QZSS triple-frequency PPP instantaneous integer ambiguity resolutions without atmosphere corrections	49
A weighted mean temperature (Tm) augmentation method based on global latitude zone	49
Real-time estimation method for ionospheric correction accuracy in GNSS augmentation based on spatial correlation analysis	48
Interannual variability of vertical land motion over High Mountain Central Asia from GPS and GRACE/GRACE-FO observations	48
High-precision velocity determination using mass-market Android GNSS measurements in the case of anomalous clock variations	48
Tropospheric parameters from multi-GNSS and numerical weather models: case study of severe precipitation and flooding in Germany in July 2021	47
Adaptive displacement extraction from GNSS kinematic positioning using interactive multi-model Kalman filter	44
GNSS performance degradation under meaconing in civil aviation: pseudorange and position models	43
Attitude estimation in challenging environments by integrating low-cost dual-antenna GNSS and MEMS MARG sensor	40
Enhancing smartphone-based vehicle navigation in deep urban areas using machine learning-aided PPP-RTK	39
TurboUNet: secure code estimation for non-cooperative GNSS spoofing	38
Multipath error extraction and mitigation based on refined wavelet level and threshold selection	38
Observations and positioning quality of low-cost GNSS receivers: a review	38
Non-holonomic constraint (NHC)-assisted GNSS/SINS positioning using a vehicle motion state classification (VMSC)-based convolution neural network	37
Global characterisation of GNSS-PWV behaviour stratified by the Köppen-Geiger climate classification	37

A multi-beam polling multiple access method for LEO navigation signals	37
An exponential optimized fitting coefficients wide-area tropospheric corrections model and its application in PPP-IAR	37
Design of a miniaturized geodetic-grade GNSS reference antenna covering Bs band	36
Estimation of the L5 antenna phase center corrections for GPS satellites	35
Pseudorange characteristics of soil-transmitted GNSS signals and their application in soil moisture content retrieval	35
Estimation of ionospheric total electron content using GNSS observations derived from a smartphone	34
Analysis of periodic terms in the DYB frame for the solar radiation pressure model of BDS-3 MEO satellites	34
A PPP kinematic application on historical GPS data: the reprocessing of the ITASE98-99 Antarctica mission height profiles	33