Geodetic Reference System 1980

  title={Geodetic Reference System 1980},
  author={Helmut Moritz},
  journal={Journal of Geodesy},

Deflection of Vertical Effect on Direct Georeferencing in Aerial Mobile Mapping Systems: A Case Study in Sweden

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

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

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

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)

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

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

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

  • M. Anni
  • Physics
    Education 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

  • Tomer ShtarkP. Gurfil
  • Physics
    Proceedings 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

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,