GPS Radio Occultation and Ultraviolet Photometry-Colocated (GROUP-C) Early Orbit Testing Results

Abstract

The GPS Radio Occultation and Ultraviolet Photometry-Colocated (GROUP-C) experiment was launched to the International Space Station on February 19, 2017. GROUP-C includes both a second-generation high-sensitivity far-ultraviolet photometer measuring horizontal nighttime ionospheric gradients and an advanced software-defined GPS receiver providing ionospheric electron density profiles, scintillation measurements, and lower atmosphere profiles. After routine flight, capture, and installation, GROUP-C underwent Early Orbit Testing to verify its performance prior to science operations. This report reviews the Early Orbit Testing tests; the payload anomalies that delayed completion of on-orbit testing; the successes and failures found, and the work-arounds devised; and recommendations for science operations and future experiments.

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Document Details

Document Type
Technical Report
Publication Date
Jan 29, 2020
Accession Number
AD1090909

Entities

People

  • Andrew W. Stephan
  • Brady W. O'hanlon
  • Rebecca L. Bishop
  • S. A. Budzien
  • Steven P. Powell
  • Todd E. Humphreys

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Artificial Satellites
  • Brushless Dc Motors
  • Computer Network Security
  • Computer Networks
  • Computer Programs
  • Computers
  • Data Rate
  • Detectors
  • Electron Density
  • Electrons
  • Engineering
  • Environment
  • Measurement
  • Payload
  • Satellite Buses
  • Small Satellites
  • Space Stations

Fields of Study

  • Environmental science

Readers

  • Software Engineering
  • Space Exploration and Orbital Mechanics.
  • Space/Atmospheric Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems
  • Space
  • Space - Satellites