منابع مشابه
The design of Mars lander cameras for Mars Pathfinder, Mars Surveyor '98 and Mars Surveyor '01
The Mars Pathfinder, Mars Surveyor ’98, and Mars Surveyor ’01 lander designs all utilize charged coupled device (CCD)-based cameras to conduct scientific investigations, assist with navigation of surface rovers and/or confirm sample acquisition and delivery by robotic arms (RAs). The extreme temperature and pressure environment of the Martian surface, the vibration and shock experienced during ...
متن کاملBayesian MARS
A Bayesian approach to multivariate adaptive regression spline (MARS) ®tting (Friedman, 1991) is proposed. This takes the form of a probability distribution over the space of possible MARS models which is explored using reversible jump Markov chain Monte Carlo methods (Green, 1995). The generated sample of MARS models produced is shown to have good predictive power when averaged and allows easy...
متن کاملModeling Mars’ ionosphere with constraints from same‐day observations by Mars Global Surveyor and Mars Express
[1] We have analyzed a brief period of same‐day observations of the Martian ionosphere using data obtained in December 2004 from the Mars Global Surveyor (MGS) and Mars Express (MEX) radio occultation experiments. These data were taken shortly after sunrise under solstice conditions in both hemispheres, with MGS in the summer (northern) hemisphere at high latitudes while MEX was in the winter (...
متن کاملObservations of the nightside ionosphere of Mars by the Mars Express Radio Science Experiment (MaRS)
[1] The vertical structure of the nightside ionosphere of Mars and its dependence on solar zenith angle are currently poorly determined, as is the importance of two key sources of nightside plasma, electron precipitation and transport of dayside plasma. We examined 37 electron density profiles of the ionosphere of Mars at solar zenith angles of 101 –123 obtained by the Mars Express Radio Scienc...
متن کاملThe Mars Society of Caltech Human Exploration of Mars Endeavor
The Mars Society of Caltech Human Exploration of Mars Endeavor (Mars SCHEME) is a detailed description of robotic and human missions necessary to establish a permanent human presence on the surface of Mars. The sequence begins in 2009 with a robotic Mars sample return mission on a larger scale than that currently planned. This is followed in 2011 by a pair of HEDS landers designed to test in-si...
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ژورنال
عنوان ژورنال: Nature
سال: 1874
ISSN: 0028-0836,1476-4687
DOI: 10.1038/009309a0