Engineering topics
Matijevic, J.
Publications and source records attributed to Matijevic, J..
The Mars exploration rover: an in situ science mission to Mars
In this paper the concept for a mobile vehicle system which performs an in situ science mission to Mars is described. This rover mission with its requirements for driving, positioning at science selected targets, and remote and in situ measurement will utilize the technologies for hazard avoidance and autonomous navigation supported by ground operation tools which use rover-based imagery for position estimation and motion planning.
MER flight system status
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Mars rovers: pathfinder and beyond
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Mars Sample Return Spacecraft Systems Architecture
The Mars Sample Return mission plans to collect sets of samples from two different sites on Mars and return them to Earth in 2008.
Summary of Results from the Risk Management Program for the Mars Microrover Flight Experiment
This paper summarizes the activites and results of the effort to conduct a low-cost, yet meaningful risk management program for the MFEX, which was originally designated as a high risk payload.
Mars Sample Return Spacecraft Systems Architecture
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Soil-Like Deposits Observed by Sojourner, The Pathfinder Rover
Most of the soil-like materials at the Pathfinder landing site behave like moderately dense soils on Earth with friction angles near 34 degrees through 39 degrees and are called cloddy deposits.
Overview of the Mars Pathfinder Mission: Launch Through Landing, Surface Operations, Data Sets, and Science Results
Mars pathfinder successfully landed at Ares Vallis on July 4, 1997 and returned 2.3 Gbits of information during 3 months of surface operations of a lander, rover, three science instruments, engineering sensors and technology experiments.
Autonomous Navigation and the Sojourner Microrover
The Mars exploration program has as an overarching theme the search for and understanding of life, climate and resources on Mars. The ability to move about the surface of Mars is key to making measurements and the gathering of the data which address this theme.
Characterization of the Martian Surface Deposits by the Mars Pathfinder Rover, Sojourner
Sojourner, the pathfinder rover, has discovered pebbles on the surface and in rocks that may be semidentary-not volcanic-in origin. Surface pebbles may have been rounded by Ares Flood Waters or liberated by weathering of sedimentary rocks called conglomerates.
Sojourner The Mars Pathfinder Microrover Flight Experiment
The Microrover Flight Experiment (MFEX) is a NASA Office of Space Access and Technology flight experiment of mobile vehicle technologies, whose primary mission is to determine microrover performance in the poorly understood planetary terrain of Mars.
Sojourner: The Mars Pathfinder Microrover Flight Experiment
The Microrover Flight Experiment (FEX) is a NASA Office of Space Access and Technology flight experiment of mobile vehicle technologies, whose primary mission is to determine microrover performance in the poorly understood planetary terrain of Mars.
The Mission and Operations of the Mars Pathfinder Microrover
The Microrover Flight Experiment (MFEX) is a NASA OACT flight experiment which is planned to be delivered and integrated with the Mars Pathfinder (MPF) lander and spacecraft system for landing on Mars on July 4, 1997.
Mars Pathfinder Microrover- Implementing a Low Cost Planetary Mission Experiment
The Mars Pathfinder Microrover Flight Experiment (MFEX) is a NASA Office of Space Access and Technology (OSAT) flight experiment which has been delivered and integrated with the Mars Pathfinder (MPF) lander and spacecraft system. The total cost of the MFEX mission, including all subsystem design and development, test, integration with the MPF lander and operations on Mars has been capped at $25 M??is paper discusses the process and the implementation scheme which has resulted in the development of this first Mars rover.
Mars Pathfinder Microrover - Implementing a Low Cost Planetary Mission Experiment
The Mars Pathfinder Microrover Flight Experiment (MFEX) is a NASA OACT flight experiment which is planned to be delivered and integrated with the Mars Pathfinder (MFP) lander and spacecraft system for landing on Mars on July 4, 1997. After landing, the MFEX rover is deployed from the lander and begins a 7 sol (1 sol=1 Martian day) mission to conduct technology experiments, deploy an alpha proton x-ray spectrometer (APXS) on rocks and soil, and image the lander as part of the engineering assessment of the mission after landing.
Mars Pathfinder Microrover
The Mars Pathfinder Microrover, its operational environment and the.
A fault tolerant design for autonomous attitude control of the DSCS-III communication satellite
The first of a new series of satellites, which will provide the principal elements in the Defense Space Communications System (DSCS), was launched on Oct. 31, 1982. This satellite, DSCS-III, is part of a system which will consist of super-high frequency communications satellites in synchronous, equatorial orbits, continuously operating in four widely separate geographic regions. The DSCS-III is designed both to maintain critical communications in the presence of an electronic jamming threat and to survive nuclear radiation exposure. The results of the present investigation are to provide a basis for the design of a spacecraft tolerant of on-board failures, survivable against external threats, and capable of performing its mission autonomously for periods as long as six months.