TARGET ACCURACY EXPERIMENT

Abstract

Open-ended Terms: AN/GMD-1A, Tiros I. The accuracy with which a target moving above the ionosphere can be located and tracked was studied. The principal line of attack on the basic problem was to measure, by radio techniques, the apparent position of radio satellites as they pass within the line of sight of a ground receiving station, and to compare the apparent position with the true position over a range of elevation angles. These measured deviations were then compared with deviations calculated using available refractive index data which are representative of the area and time in which the measurements were taken. Since it was recognized that these deviations are greatest at low elevation angles, and that it is of greatest importance to detect and track at low elevation angles, the work was concentrated on elevation angles below 15 degrees.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1961
Accession Number
AD0256357

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Doppler Effect
  • Electron Density
  • Electronic Equipment
  • Electrons
  • Frequency
  • Frequency Shift
  • Fresnel Zones
  • Geometry
  • Low Elevation
  • Measurement
  • Radio Waves
  • Radiosondes
  • Recording Systems
  • Refractive Index
  • Sea Level

Readers

  • Geodesy
  • Radar Systems Engineering.

Technology Areas

  • Space
  • Space - Space Objects