Environmental Position Errors of the GPS - Army User Equipment.

Abstract

The effect of masking angle, multipathing, foliage penetration and signal strength on the determination of GPS - Army User Equipment locations was determined. A computer program to simulate the scenario functions was written and was used to perturb range measurements from 10 user locations to six GPS satellites (initial deployment configuration). Tracking times of 20 minutes, 2 hours, and 7 hours were investigated to determine the affect of the solution of a user's position. Various magnitudes of the scenario functions were also considered. The results indicate that GPS user equipment operating in a typical Army environment will not be able to recover the user's position to better than 3 meters even if the only source of error was due to the scenario functions. The magnitude of the error due to scenario functions produces almost a one-to-one error in the determination of the user's location. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1976
Accession Number
ADA025940

Entities

People

  • F. M. Loveless

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Computer Programs
  • Computers
  • Deployment
  • Environment
  • Machines
  • Measurement
  • Mechanical Equipment
  • Positioning Devices (Machinery)

Readers

  • Control Systems Engineering.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Sensor Fusion and Tracking Systems.

Technology Areas

  • Space