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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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Enhanced Decoding for the Galileo Low-Gain Antenna Mission

Due to a malfunctioning high-gain antenna, the Galileo spacecraft is transmitting all its data through a low-gain antenna, and the data rate will seldom exceed 100 bits per second during its two-year tour of Jupiter's satellites.

decoder Viterbi decoder Reed-Solomon baseline codi↗

The Flight Perfomance of the Galileo Orbiter USO

Radiometric tracking Doppler measurements of the signal transmitted by the Galileo spacecraft using an Ultra-Stable Oscillator (USO) as a frequency reference have been acquired by antennas of the NSA Deep Space Network between Dec. 1998 and No. 1991.

Galileo Orbiter↗

Galileo Spacecraft Scan Platform Celestial Pointing Cone Control Gain Redesign

During September and October 1991, pictures of the Gaspra asteroid and neighboring stars were taken by the Galileo Optical Navigation (OPNAV) Team for the purpose of navigation the spacecraft for a successful Gaspra encounter. The star tracks in these pictures showed that the scan platform celestial pointing cone controller performed poorly in compensating for wobble-induced cone offsets.

Gaspar asteroid Galileo Optical Navigation (OPNAV)↗

Status of Galileo interim radiation electron model

Measurements of the high energy, omni-directional electron environment by the Galileo spacecraft Energetic Particle Detector (EDP) were used to develop a new model of Jupiter's trapped electron radiation in the jovian equatorial plane for the range 8 to 16 Jupiter radii.

Galileo radiation model Jupiter radiation↗

Navigating Galileo in the Jovian System

The Galileo spacecraft's navigation results for the first eleve Jupiter satellite encounters are described.

Galileo spacecraft's navigation Jupiter planetary ↗

Galileo, The Tour Guide

At this very moment, spacecraft Galileo is orbiting the planet Jupiter. We invite you to join us for an exciting 2-year mission, the first extensive visit to an outer planet and its satellites.

Galileo Jupiter↗

NIMS Science Objectives and Observational Plans for Ganymede during the Galileo Tour

The Galileo spacecraft will use a Near Infrared Mapping Spectrometer (NIMS) to study Jupiter s moon, Ganymede. Although the main goal is to study the chemical components in the various surface compositional units, terrain types, craters, polar effects, hemisphere differences, and the atmosphere also will be examined.

components compositional units terrain types crate↗