OOIR: Observatory of International Research

Papers

(The TQCC of Journal of Geodesy is 9. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 500 papers]. The publications cover those that have been published in the past four years, i.e., from 2019-12-01 to 2023-12-01.)

Article	Citations
The combined global gravity field model XGM2019e	136
Absolute airborne gravimetry with a cold atom sensor	85
Speeding up PPP ambiguity resolution using triple-frequency GPS/BeiDou/Galileo/QZSS data	61
IGS real-time service for global ionospheric total electron content modeling	60
The CODE ambiguity-fixed clock and phase bias analysis products: generation, properties, and performance	59
On the interoperability of IGS products for precise point positioning with ambiguity resolution	55
SNR-based GNSS reflectometry for coastal sea-level altimetry: results from the first IAG inter-comparison campaign	54
Best integer equivariant estimation: performance analysis using real data collected by low-cost, single- and dual-frequency, multi-GNSS receivers for short- to long-baseline RTK positioning	45
Beyond three frequencies: an extendable model for single-epoch decimeter-level point positioning by exploiting Galileo and BeiDou-3 signals	42
Marine gravity determined from multi-satellite GM/ERM altimeter data over the South China Sea: SCSGA V1.0	40
GPS and GLONASS observable-specific code bias estimation: comparison of solutions from the IGS and MGEX networks	38
Mitigation of ionospheric scintillation effects on GNSS precise point positioning (PPP) at low latitudes	36
BDS multi-frequency PPP ambiguity resolution with new B2a/B2b/B2a + b signals and legacy B1I/B3I signals	35
Multi-GNSS PPP/INS tightly coupled integration with atmospheric augmentation and its application in urban vehicle navigation	35
GRACE-FO precise orbit determination and gravity recovery	34
Precipitable water vapor fusion based on a generalized regression neural network	33
Amplitude scintillation index derived from C/N0 measurements released by common geodetic GNSS receivers operating at 1 Hz	31
An offshore real-time precise point positioning technique based on a single set of BeiDou short-message communication devices	31
GNSS scale determination using calibrated receiver and Galileo satellite antenna patterns	30
Colorado geoid computation experiment: overview and summary	30
Integer-estimable FDMA model as an enabler of GLONASS PPP-RTK	29
BDS-3 differential code bias estimation with undifferenced uncombined model based on triple-frequency observation	29
The phase and code biases of Galileo and BDS-3 BOC signals: effect on ambiguity resolution and precise positioning	28
Strategy for the realisation of the International Height Reference System (IHRS)	28
On the application of the raw-observation-based PPP to global ionosphere VTEC modeling: an advantage demonstration in the multi-frequency and multi-GNSS context	28

Toward the 1-cm Galileo orbits: challenges in modeling of perturbing forces	27
Resilient observation models for seafloor geodetic positioning	26
Improving PPP–RTK in urban environment by tightly coupled integration of GNSS and INS	25
Sentinel-6A precise orbit determination using a combined GPS/Galileo receiver	25
GNSS observable-specific phase biases for all-frequency PPP ambiguity resolution	25
Radial interpolation of GPS and leveling data of ground deformation in a resurgent caldera: application to Campi Flegrei (Italy)	23
Mapping topside ionospheric vertical electron content from multiple LEO satellites at different orbital altitudes	23
Orbit and clock analysis of BDS-3 satellites using inter-satellite link observations	23
Improved performance of ERA5 in global tropospheric delay retrieval	23
Single-station PPP-RTK: correction latency and ambiguity resolution performance	22
ITRF2020: an augmented reference frame refining the modeling of nonlinear station motions	22
Reducing convergence time of precise point positioning with ionospheric constraints and receiver differential code bias modeling	22
Atmospheric pressure loading in GPS positions: dependency on GPS processing methods and effect on assessment of seasonal deformation in the contiguous USA and Alaska	21
A new hybrid method to improve the ultra-short-term prediction of LOD	21
A Geoid Slope Validation Survey (2017) in the rugged terrain of Colorado, USA	21
Refining the empirical global pressure and temperature model with the ERA5 reanalysis and radiosonde data	21
Sentinel-1 TOPS co-registration over low-coherence areas and its application to velocity estimation using the all pairs shortest path algorithm	20
Robust estimation of spatially varying common-mode components in GPS time-series	20
Benefits of combining GPS and GLONASS for measuring ocean tide loading displacement	19
A hybrid approach for recovering high-resolution temporal gravity fields from satellite laser ranging	19
Integrity investigation of global ionospheric TEC maps for high-precision positioning	18
Rapid troposphere tomography using adaptive simultaneous iterative reconstruction technique	18
Extended forward and inverse modeling of radiation pressure accelerations for LEO satellites	18
Robust M estimation for 3D correlated vector observations based on modified bifactor weight reduction model	17
A single-receiver geometry-free approach to stochastic modeling of multi-frequency GNSS observables	17
GRACE gravitational measurements of tsunamis after the 2004, 2010, and 2011 great earthquakes	17
Status of the International Gravity Reference System and Frame	17
A new way of improving global ionospheric maps by ionospheric tomography: consistent combination of multi-GNSS and multi-space geodetic dual-frequency measurements gathered from vessel-, LEO- and grou	17
Simplified algebraic estimation for the quality control of DIA estimator	16
Reference system origin and scale realization within the future GNSS constellation “Kepler”	16
Improving GNSS-acoustic positioning by optimizing the ship’s track lines and observation combinations	15
Gravity field mapping using laser-coupled quantum accelerometers in space	15
Real-time interpolation of global ionospheric maps by means of sparse representation	15
On the organization of CONT17	15
Improving solar radiation pressure modeling for GLONASS satellites	15
Regional gravity field refinement for (quasi-) geoid determination based on spherical radial basis functions in Colorado	15
Influence of temporal resolution on the performance of global ionospheric maps	14
Regularized reconstruction of peak ground velocity and acceleration from very high-rate GNSS precise point positioning with applications to the 2013 Lushan Mw6.6 earthquake	14
A shipborne experiment using a dual-antenna reflectometry system for GPS/BDS code delay measurements	14
An uncombined triple-frequency user implementation of the decoupled clock model for PPP-AR	14
The permanent tide and the International Height Reference Frame IHRF	14
A multi-frequency and multi-GNSS method for the retrieval of the ionospheric TEC and intraday variability of receiver DCBs	13
Calibrating receiver-type-dependent wide-lane uncalibrated phase delay biases for PPP integer ambiguity resolution	13
Forty-three years of absolute gravity observations of the Fennoscandian postglacial rebound in Finland	13
The results of 10th International Comparison of Absolute Gravimeters (ICAG-2017)	13
Comparative analysis of different atmospheric surface pressure models and their impacts on daily ITRF2014 GNSS residual time series	13
Research on empirical correction models of GPS Block IIF and BDS satellite inter-frequency clock bias	13
Best integer equivariant estimation for elliptically contoured distributions	13
Raytracing atmospheric delays in ground-based GNSS reflectometry	13
The Geodesist’s Handbook 2020	12

A spatio-temporal deformation model for laser scanning point clouds	12
Using quantum optical sensors for determining the Earth’s gravity field from space	12
High-resolution geoid modeling using least squares modification of Stokes and Hotine formulas in Colorado	12
An analysis of multisource tropospheric hydrostatic delays and their implications for GPS/GLONASS PPP-based zenith tropospheric delay and height estimations	12
Estimation of code observation-specific biases (OSBs) for the modernized multi-frequency and multi-GNSS signals: an undifferenced and uncombined approach	12
Mitigating high latitude ionospheric scintillation effects on GNSS Precise Point Positioning exploiting 1-s scintillation indices	11
Collocation and FFT-based geoid estimation within the Colorado 1 cm geoid experiment	11
Comparison and evaluation of high-resolution marine gravity recovery via sea surface heights or sea surface slopes	11
Optimizing schedules for the VLBI global observing system	11
Visualization of GNSS multipath effects and its potential application in IGS data processing	11
Approach to leveraging real-time GNSS tomography usage	11
Estimating ambiguity fixed satellite orbit, integer clock and daily bias products for GPS L1/L2, L1/L5 and Galileo E1/E5a, E1/E5b signals	11
Fusing adjacent-track InSAR datasets to densify the temporal resolution of time-series 3-D displacement estimation over mining areas with a prior deformation model and a generalized weighting least-sq	11
Contribution of GRAV-D airborne gravity to improvement of regional gravimetric geoid modelling in Colorado, USA	11
Geodetic VLBI for precise orbit determination of Earth satellites: a simulation study	10
Exploring potential applications of optical lattice clocks in a plate subduction zone	10
Quantifying errors in GNSS antenna calibrations	10
Colorado geoid modeling at the US National Geodetic Survey	10
A generalized Kalman filter with its precision in recursive form when the stochastic model is misspecified	10
Smoothing and predicting celestial pole offsets using a Kalman filter and smoother	10
Sub-daily polar motion from GPS, GLONASS, and Galileo	10
Low-latitude GNSS ionospheric scintillation dependence on magnetic field orientation and impacts on positioning	10
Orbit determination, clock estimation and performance evaluation of BDS-3 PPP-B2b service	10
Calibration and analysis of BDS receiver-dependent code biases	10
Satellite antenna phase center errors: magnified threat to multi-frequency PPP ambiguity resolution	10
New gravimetric-only and hybrid geoid models of Taiwan for height modernisation, cross-island datum connection and airborne LiDAR mapping	10
Gravity field of a tesseroid by variable-order Gauss–Legendre quadrature	10
Tropospheric and range biases in Satellite Laser Ranging	9
Optimal VLBI baseline geometry for UT1-UTC Intensive observations	9
ON GLONASS pseudo-range inter-frequency bias solution with ionospheric delay modeling and the undifferenced uncombined PPP	9
A flexible strategy for handling the datum and initial bias in real-time GNSS satellite clock estimation	9
Determination of the lunar body tide from global laser altimetry data	9
Specification of deformation congruence models using combinatorial iterative DIA testing procedure	9
Integration of airborne gravimetry data filtering into residual least-squares collocation: example from the 1 cm geoid experiment	9
Short-baseline interferometry local-tie experiments at the Onsala Space Observatory	9
Effect of antenna snow intrusion on vertical GPS position time series in Antarctica	9
Ambiguity resolution for smartphone GNSS precise positioning: effect factors and performance	9
Evaluation of comparisons of absolute gravimeters using correlated quantities: reprocessing and analyses of recent comparisons	9
A risk evaluation method for deformation monitoring systems	9
A novel spatial filter to reduce north–south striping noise in GRACE spherical harmonic coefficients	9
Inclusion of GPS clock estimates for satellites Sentinel-3A/3B in DORIS geodetic solutions	9
Observable quality assessment of broadband very long baseline interferometry system	9