Dynamic Accuracy of Inertial Magnetic Sensor Modules

Abstract

Magnetic, angular rate, and gravity (MARG) sensor modules have extensive applications in inertial navigation and motion tracking. A wide assortment of these sensor modules exist at varying cost points. In the current fiscal environment, affordable devices are needed; however, performance cannot be sacrificed.The main purpose of the study is to devise a series of tests to evaluate the dynamic accuracy of the LORD MicroStrain 3DM-GX4-25 Attitude Heading Reference System (AHRS). Previous NPS theses have been constrained to static tests and dynamic, rotational tests in a single axis of motion. Utilizing the OptiTrack Motion Capture System, we examine the dynamic accuracy of the 3DM-GX4-25 for rotations in a single axis of motion and arbitrary motions in three-dimensional space, compare the dynamic accuracy against other MARG sensor modules used in previous NPS theses, and provide a cost analysis of the 3DM-GX4-25. Although the dynamic accuracy of the 3DM-GX4-25 met performance specifications for most cases, another MARG sensor module existed with better performance and lower cost.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2016
Accession Number
AD1031485

Entities

People

  • Heather L. Pelachick

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Angular Motion
  • Autonomous Underwater Vehicles
  • Coordinate Systems
  • Detection
  • Detectors
  • Global Positioning Systems
  • Ground Control Stations
  • Inertial Navigation
  • Magnetic Detectors
  • Measurement
  • Microelectromechanical Systems
  • Motion Capture
  • Navigation
  • Standards
  • Three Dimensional
  • Unmanned Aerial Vehicles

Readers

  • Computational Fluid Dynamics (CFD)
  • Inertial Navigation Systems.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Satellites
  • Space - Spacecraft Maneuvers