93 Citations
Deflection of Vertical Effect on Direct Georeferencing in Aerial Mobile Mapping Systems: A Case Study in Sweden
- Environmental ScienceThe Photogrammetric Record
- 2022
GNSS/INS applications are being developed, especially for direct georeferencing in airborne photogrammetry. Achieving accurately georeferenced products from the integration of GNSS and INS requires…
The first pan-Alpine surface-gravity database, a modern compilation that crosses frontiers
- GeologyEarth System Science Data
- 2021
Abstract. The AlpArray Gravity Research Group (AAGRG), as part of the
European AlpArray program, focuses on the compilation of a homogeneous
surface-based gravity data set across the Alpine area. In…
How gravity field shortened our metre
- PhysicsJournal of Geodesy
- 2019
We became interested in investigating the origin of the length of the metre as a basis of the metric system after reading Ken Alder’s 2002 book “The measure of all things”, where we learnt that the…
Comparing analytical and numerical approaches to meteoroid orbit determination using Hayabusa telemetry
- Physics, GeologyMeteoritics & Planetary Science
- 2019
Fireball networks establish the trajectories of meteoritic material passing through Earth's atmosphere, from which they can derive pre‐entry orbits. Triangulated atmospheric trajectory data require…
Strategy for the realisation of the International Height Reference System (IHRS)
- Environmental ScienceJournal of Geodesy
- 2021
A strategy for the establishment of the International Height Reference Frame (IHRF) is defined including data requirements, a set of minimum standards/conventions for the determination of potential coordinates, a first IHRF reference network configuration, and a proposal to create a component ofThe International Gravity Field Service (IGFS) dedicated to the maintenance and servicing of the IHRS/I HRF.
Spherical harmonic synthesis of area-mean potential values on irregular surfaces
- PhysicsJournal of Geodesy
- 2022
We present a method to integrate external solid spherical harmonic expansions at geographical grids residing on undulated surfaces. It can be used to evaluate area-mean potential values on planetary…
Introduction of the Hezar International Gravity Formula
- GeologyFrontiers in Physics
- 2022
The National Cartographic Center of Iran measured the differences in gravity between the Hezar summit and peak of Mount Damavand using a CG-5 gravity meter. The gravity recorded at the Hezar summit…
Quantitative Comparison between the Smartphone Based Experiments for the Gravity Acceleration Measurement at Home
- PhysicsEducation Sciences
- 2021
Smartphones are currently proposed as potential portable laboratories to perform a wide variety of physical experiments for teaching purpose. However, the frequent lack of clarity about the ease of…
Position and velocity estimation with a low Earth orbit regional navigation satellite constellation
- PhysicsProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
- 2021
Position and velocity estimation using Global Navigation Satellite Systems (GNSS) has been widely studied and implemented. In contrast to existing GNSS, the idea of using low Earth orbit (LEO)…
Direct Harmonic Analysis for the Ellipsoidal Topographic Potential with Global and Local Validation
- GeologySurveys in Geophysics
- 2020
Forward gravity field modelling requires high accurate determination of the topographic potential on the surface of the Earth’s ellipsoid. Since the topography is recently known with high resolution,…