Geodion — Precision in Geodesy

Services

Specialist support for complex geodetic problems.

Geodion provides proportionate specialist support—from a focused consultation or independent review to defined processing, modelling, software and training assignments.

Physical Geodesy & Geoid Determination

Gravity-field modelling, geoid computation and high-accuracy height-system support.

  • Global and regional geoid modelling
  • Geopotential models and spherical harmonics
  • Geoid heights and vertical referencing
  • Assessment of gravity-field and geoid products

GNSS Processing & Quality Control

High-precision GNSS processing, coordinate validation, performance assessment and QC.

  • Static and network GNSS processing
  • RINEX and observation-quality checks
  • Positioning performance and repeatability assessment
  • Offshore GNSS support and troubleshooting

Satellite Altimetry & Sea-Level Applications

Altimetry processing, coastal retracking, calibration/validation and sea-level analysis.

  • Coastal and open-ocean altimetry processing
  • Calibration and validation of altimetry products
  • Sea-surface and sea-level interpretation
  • Mission-data and algorithm support

Reference Frames, Datums & Transformations

Design, realisation and transformation of national and global geodetic reference systems.

  • ITRF and national-frame connections
  • Horizontal and vertical datum transformations
  • Parameter estimation and validation
  • Reference-system migration procedures

Height Systems & Vertical Datums

Vertical datum integration, geoid-to-datum relationships and practical height determination.

  • Vertical reference-frame assessment
  • Ellipsoidal, orthometric and normal heights
  • Geoid and height-transformation surfaces
  • Tide-gauge and levelling integration

Tidal Analysis & Coastal Sea Level

Tidal modelling, tide-gauge analysis, mean sea level and coastal monitoring support.

  • Harmonic tidal analysis
  • Tide-gauge data quality and interpretation
  • Mean sea-level and trend assessment
  • Coastal sea-level applications

Offshore & Marine Geodesy Advice

Independent technical advice, data review and quality-control support for offshore GNSS and marine survey projects.

  • Review of offshore GNSS positioning methods and workflows
  • Independent assessment of positioning data, QC and reports
  • GNSS performance investigation and technical troubleshooting
  • Advice on integrating GNSS with hydrographic and marine observations

Scientific Computing, Review & Reporting

Reproducible analysis, specialist software, independent review and efficient reporting.

  • Python, MATLAB and FORTRAN workflows
  • Large geodetic dataset analysis
  • Independent technical review and assurance
  • Expert-reviewed, AI-assisted reporting where appropriate

Consultancy approach

Clear scope. Traceable method. Practical outcome.

  1. Understand the requirementClarify the technical question, data, decision context and required output.
  2. Agree the methodDefine assumptions, reference systems, quality criteria, deliverables and timescale.
  3. Analyse and validateUse reproducible workflows, documented checks and independent technical judgement.
  4. Deliver and transfer knowledgeProvide clear reporting, recommendations and practical handover or training.