Velocity Determination for an Inverted Pseudolite Navigation Reference System

Abstract

As navigation systems continue to improve in performance and features, the Air Force must develop better Navigation Reference Systems (NRS) to keep pace with technology. Specifically, with the advent of enhanced, integrated Global Positioning System (GPS) and Inertial Navigation System (INS) navigators, emphasis is placed on the measuring performance in the presence of GPS jamming. To meet these needs, a new NRS, dubbed the Sub-Meter Accuracy Reference System (SARS), is being developed by the 746th Test Squadron, Holloman AFB, New Mexico. SARS uses a unique, inverted GPS pseudolite positioning system to determine a reference trajectory. This research investigates two pos processing methods of determining velocity from a discrete position data at a constant data rate. The first method employs numerical differentiation along with digital filters provide noise reduction. The second method uses kinematic model based Kalman filter and smoothing to determine the reference velocity.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1995
Accession Number
ADA305930

Entities

People

  • Jeffrey M. Hebert

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Electrical Engineering
  • Fighter Aircraft
  • Filtration
  • Geometry
  • Global Positioning Systems
  • Guidance
  • Inertial Navigation
  • Inertial Navigation Systems
  • Information Science
  • Kalman Filtering
  • Kalman Filters
  • Mathematical Filters
  • Navigation
  • Three Dimensional
  • Two Dimensional

Readers

  • Approximation Theory.
  • Computer Vision.
  • Inertial Navigation Systems.

Technology Areas

  • Space