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Adaptive Calibration Technology in Digital Compasses and Inertial Systems

Summary: Conventional digital magnetic compasses require a complex and cumbersome “in-field” calibration process. This calibration, commonly referred to as the “Kabuki Dance”, is not embraced by most users including the military and is often performed improperly, incompletely, or sometimes not at all. This results in diminished sensor performance and poor overall accuracy, in targeting and […]

Compensation for Magnetic Disturbances

Compensation for Magnetic Disturbances Ideally, during the integration process, the magnetic interferences from application components have been minimized by careful material sections and placement of components. The platform size and weight limitations will of course limit how magnetically quiet the device can be. The inertial system on-board calibration and adaptive compensation can be used to […]

Evaluation of Magnetic Disturbances

Evaluation of Magnetic Disturbances Product-specific integration guidelines for the inertial system are unique for each application. It is difficult to calculate or predict the magnetic profile of each component in order to provide specific guidelines to the designers. Also, application packaging and weight constraints make it impossible to create an ideal magnetic environment for the […]

Sources of Magnetic Distortion

The performance of the inertial system will depend greatly on its installation within an application. Magnetic material close to the system could distort the intensity or direction of the measured Earth’s magnetic field, resulting in heading inaccuracy. Below is a description of the sources of soft and hard magnetic material. When identifying the ferrous material […]

Integration Guidelines for Inertial Systems: Magnetic Field Distortions

The performance of the inertial system will depend greatly on its installation within the application. Magnetic material close to the system could distort the intensity or direction of the measured Earth’s magnetic field, resulting in heading inaccuracy. The sensor does contain onboard calibration procedures that can correct for magnetic disturbances, however the larger the magnetic […]

In-Field Calibration and Orientation Modifications

This blog provides information relative to the process by which a user would perform an in-field Calibration and modify the orientation by using an orientation variable, Boresight matrix, or a NorthTek™ script. Most application environments have some sort of hard or soft iron magnetic interference, and as such an in-field calibration of the inertial system […]

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