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The autonomous exploration for gathering increased science system (AEGIS) will soon provide automated targeting for remote sensing instruments on the Mars exploration rover (MER) mission, which currently has two rovers exploring the surface of Mars. Targets for rover remote sensing instruments, especially narrow field of view instruments (such as the MER Mini-TES spectrometer or the 2011 Mars Science...
The onboard autonomous science investigation system (OASIS) evaluates geologic data gathered by a planetary rover. This analysis is used to prioritize the data for transmission, so that the data with the highest science value is transmitted to Earth. In addition, the onboard analysis results are used to identify science opportunities. A planning and scheduling component of the system enables the rover...
The Onboard Autonomous Science Investigation System (OASIS) was used in the first formal demonstration of closed loop opportunistic detection and reaction during a rover traverse on the FIDO rover at NASA's Jet Propulsion Laboratory. In addition to hardware demonstrations, the system has been demonstrated and exercised in simulation using the Rover Analysis, Modeling, and Simulation (ROAMS) planetary...
We are developing a simple apparatus to quickly determine the amount of water/ice using two probes that contact the regolith. Using impedance spectroscopy, we describe how conductivity measurements were used to determine the amount of water/ice in simulated martian soils. We measured silica sand samples containing 0.05% to 10% water doped with KC1 and MgSO4 between -65degC and 25degC. Results indicate...
The goal of the Onboard Autonomous Science Investigation System (OASIS) project at NASA's Jet Propulsion Laboratory (JPL) is to evaluate, and autonomously act upon, science data gathered by in-situ spacecraft, such as planetary landers and rovers. Using the FIDO rover in the Mars yard at JPL, we have successfully demonstrated a closed loop system test of the rover acquiring image data, finding rocks...
In this effort we used electrical impedance spectroscopy and a four-probe apparatus, the electrical properties cup (EPC), to measure the properties of various lunar and martian soil simulants. The impedance values are characterized by a resistance-capacitor network that is used to determine the soil conductivity and dielectric constant. In this effort we measured the impedance of different types of...
A miniature four-point probe instrument has been developed and applied to the characterization of the moisture content of the Martian soil simulants using fine and coarse silica sand and Moses Lake basalt. The results indicate that the soil resistivity varies over four orders of magnitude as the moisture content varied from 0.1% to over 10%. In addition it was found that forcing too much current through...
The Apollo and Russian missions during 1970s were reviewed to rediscover the type and distribution of minerals on the Moon. This study revealed that the Moon has a restricted set of minerals when compared with the Earth. Results from lunar minerals brought back to Earth, indicate that the Moon lacks water, hydroxyl ions, and carbon based minerals. This mineral set is probably incomplete and so is...
With each new rover mission to Mars, rovers are traveling significantly longer distances. This distance increase allows not only the collection of more science data, but enables a number of new and different science collection opportunities. Current mission operations, such as that on the 2003 Mars exploration rovers (MER), require all rover commands to be determined on the ground, which is a time-consuming...
The Onboard Autonomous Science Investigation System (OASIS) evaluates geologic data gathered by a planetary rover. This analysis is used to prioritize the data for transmission, so that the data with the highest science value is transmitted to Earth. In addition, the onboard analysis results are used to identify science opportunities. A planning and scheduling component of the system enables the rover...
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