An Overview of GPS Augmentation Systems

Abstract

The mature satellite-based navigation systems that are now available (e.g., GPS) have provided adequate positioning capability to users. However, their very success has been a driving force to increase accuracy, availability, reliability, and integrity requirements. As a result, several satellite augmentation systems have been or are in the process of being designed, developed, and/or tested in order to meet the ever-demanding requirements. This paper will provide a summary of the current possibilities to improve GPS performance, namely the impact of the GPS modernization program itself, augmentation with the satellite-based GLONASS, WAAS, MSAS, and EGNOS systems, and augmentation with on-board aiding; e.g., barometers and clocks. Performances are discussed as a function of user mask angle. The impact of combined GPS/GALILEO is briefly addressed.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA495470

Entities

People

  • Gerard Lachapelle
  • M. G. Petovello
  • Patrick C. Fenton

Organizations

  • University of Calgary

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Availability
  • Carrier Frequencies
  • Communication Satellites
  • Computations
  • Engineering
  • European Communities
  • Frequency
  • Geosynchronous Orbits
  • Geosynchronous Satellites
  • Measurement
  • Navigation
  • Orbits
  • Reliability
  • Satellite Orbits
  • Time Intervals

Fields of Study

  • Engineering

Readers

  • Inertial Navigation Systems.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Systems Analysis and Design

Technology Areas

  • Space