[1] This article addresses the correction for aerosol effects in near-simultaneous multiangle observations acquired by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) aboard the Mars Reconnaissance Orbiter. In the targeted mode, CRISM senses the surface of Mars using 11 viewing angles, which allow it to provide unique information on the scattering properties of surface material...

AGGREGATE BEDFORMS AND YARDANGS AS SEEN BY THE HIRISE CAMERA N.T. Bridges, L.P. Keszthelyi, B.J. Thomson, J.J. Wray, M.E. Banks, R.A. Beyer, F.C. Chuang, K.E. Herkenhoff, K.E. Fishbaugh, A.S. McEwen, and T.I. Michaels; Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 ([email protected]); U.S. Geological Survey, Flagstaff, AZ 86001;A...

Every computer user is familiar with software bugs. Many seem to appear almost randomly, suggesting that the conditions triggering them must be complex, and some famous software bugs have been traced to highly unusual combinations of conditions. For example, the 1997 Mars Pathfinder mission began experiencing system resets at seemingly unpredictable times soon after it landed and began collecti...

Abstract Scour depth estimation is an essential factor in water-related engineering problems. Scouring below spillways may endanger a dam's stability and even lead to dam destruction. As result, it has undesirable environmental effects due failure. Hence, reliable accurate scour exciting topic for researchers. For this purpose, the published prototype data related ski jump bucket (Ds) was used ...

Knowledge of the spatial distribution soil organic carbon (SOC) is crucial importance for improving crop productivity and assessing effect agronomic management strategies on response quality. Incorporating secondary variables correlated to SOC allows using information often available at finer resolution, such as proximal remote sensing data, prediction accuracy. In this study, two nonstationary...

Estimates of forest aboveground biomass are fundamental for carbon monitoring and accounting; delivering information at very high spatial resolution is especially valuable for local management, conservation and selective logging purposes. In tropical areas, hosting large biomass and biodiversity resources which are often threatened by unsustainable anthropogenic pressures, frequent forest resou...

Measurements of the yield of important trace gas species such as ozone, evolved during photolytic reactions have been made under Martian environmental conditions in one of the The Open University’s Mars simulation chambers. The simulation chamber can mimic Martian temperatures and pressures and a UV solar simulator can be added to irradiate a Marslike gas mixture within the chamber to drive che...

To deliver a Mars entry vehicle to the prescribed parachute deployment point, active entry guidance is essential. This paper addresses the problem of Mars atmospheric entry guidance through drag tracking method with extended high gain observer. First, an extended high gain observer combined with feedback linearization is applied in drag tracking for Mars entry longitudinal guidance. The observe...