Estimation of the Local Vertical State for a Guided Munition Shell with an Embedded GPS/Micro-Mechanical Inertial Navigation System.

Abstract

This project considers a ballistic munition shell with an automated flight control system commanding control surface deflections to canards installed on the shell nose to guide the munition shell to its target. An algorithm to estimate the local vertical state of the shell spinning between 0 and 2 Hz is developed using GPS velocity measurements and 3 axis micro rate gyro measurements. Roll angle estimation performance is simulated and analyzed. Several shell roll rates between 0 and 2Hz are tested to quantify estimator performance across the specified roll rate frequency spectrum. A priori gravity turn information is substituted for GPS measurements to make an inertial only algorithm and the performance effects are quantified. Finally, an extended Kalman filter implementation of the inertial only roll estimating algorithm is developed and its performance is simulated and analyzed by first isolating the individual contributions of each sensor error and then considering the full suite of errors. (AN)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1995
Accession Number
ADA294641

Entities

People

  • David J. Lucia

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Control Surfaces
  • Control Systems
  • Estimators
  • Filters
  • Flight Control Systems
  • Inertial Navigation
  • Inertial Navigation Systems
  • Kalman Filters
  • Measurement
  • Munitions
  • Navigation
  • Statistical Algorithms

Fields of Study

  • Physics

Readers

  • Inertial Navigation Systems.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers