Simultaneous Processing of Photographic and Accelerometer Array Data from Sled Impact Experiments,

Abstract

A Quaternion-Kalman filter model is derived to simultaneously analyze accelerometer array and photographic data from sled impact experiments. Formulas are given for the quaternion representation of rotations, the propagation of dynamical states and their partial derivatives, the observables and their partial derivatives, and the Kalman filter update of the state given the observables. The observables are accelerometer and tachometer velocity data of the sled relative to the track, linear accelerometer array and photographic data of the subject relative to the sled, and ideal angular accelerometer data. The quaternion constraints enter through perfect constraint observations and normalization after a state update. Lateral and fore-aft impact tests are analyzed with Fortran IV software written using the formulas of this report.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA128100

Entities

People

  • Michael E. Ash

Organizations

  • Charles Stark Draper Laboratory

Tags

Communities of Interest

  • Biomedical
  • Materials and Manufacturing Processes
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Angular Acceleration
  • Angular Motion
  • Bioengineering
  • Biomedical Research
  • Birds
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Data Analysis
  • Equations
  • Equations Of State
  • Kalman Filters
  • Measurement
  • Motion Picture Cameras
  • Standards

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Mathematical Modeling and Probability Theory.
  • Robotics and Automation.