Accession Number:

AD1090909

Title:

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

Descriptive Note:

Technical Report,01 Feb 2017,30 Jun 2019

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States

Report Date:

2020-01-29

Pagination or Media Count:

42.0

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.

Subject Categories:

  • Air Navigation and Guidance
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE