The World Magnetic Model (WMM) is the standard model for navigation, attitude, and heading referencing systems that use the geomagnetic field. The WMM is also used for civilian applications, including navigation and heading systems. A new version of the model is updated every five years to address changes in Earth’s magnetic field.

2024年12月17日 · The latest version of the World Magnetic Model (WMM), one of the key tools developed to model the change in Earth's magnetic field, has been released. The WMM is a spherical harmonic model of the Earth’s main magnetic field and its slow temporal change.

2024年12月17日 · The U.S. Department of Defense, the U.K. Ministry of Defence, the UK Hydrographic Office, the North Atlantic Treaty Organization and the International Hydrographic Organization use the WMM as the standard model for navigation, attitude and heading referencing systems using the geomagnetic field.

Coefficient files for the world magnetic model.

The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and the International Hydrographic Organization (IHO), for navigation, attitude and heading referencing systems using the geomagnetic field.

2019年12月10日 · About WMM. Learn more about model derivation, uncertainties and magnetic poles. Model & Software. Download model coefficients, software and documentation. Online Calculators. Calculate magnetic field values at or near the Earth surface. Maps. Browse imagery and contour maps for main field and secular change. Uses of WMM. Common applications of ...

Use the tool below to compute values for the geomagnetic field and secular variation for a given set of coordinates and date. This calculator uses the World Magnetic Model as released in Dec 2024.

The World Magnetic Model (WMM) is a standard model of the core and large-scale crustal magnetic field. It is used extensively for navigation and in attitude and heading referencing systems by the UK Ministry of Defence, the US Department of Defense, the North Atlantic Treaty Organization and the International Hydrographic Organization.

This report contains a complete description of the World Magnetic Model (WMM) 2020. Section 1 contains information that users of WMM2020 require in order to implement the model and software in navigation and heading systems, and to understand magnetic charts, poles and geomagnetic coordinate systems.

The World Magnetic Model (WMM) is the standard model for navigation, attitude, and heading referencing systems using the geomagnetic field. Additional WMM uses include civilian applications, including navigation and heading systems.