Search Publications
Registration of Mars remote sensing images under the crater constraint
Cheng, Liang; Ma, Lei; Yang, Kang +2 more
Registration of Mars remote sensing images is vital to jointly exploit and integrate the data from various sensors and periods, which is difficult because the lack of textural information in Mars images. We proposed a RANSAC-based iterative method, under the crater constraint, for affine invariant feature matching. The novelty of this method is, i…
Morphology and geology of an interior layered deposit in the western Tithonium Chasma, Mars
Baioni, Davide
This paper describes a morphologic and morphometric survey of a 3.1 km-high, domeshaped upland in western Tithonium Chasma (TC) which coincides with areas containing abundant surface signatures of the sulphate mineral kiersite, as identified by the OMEGA image spectrometer. The morphologic features of the dome were investigated through an integrat…
A method to estimate optical distortion using planetary images
Imamura, Takeshi; Yamazaki, Atsushi; Kouyama, Toru +1 more
We developed a method to calibrate optical distortion parameters for axisymmetrical optical systems using images of a spherical target taken at a variety of distances. The method utilizes the fact that the influence of distortion on the apparent radius in the image changes with the disk size of the projected body. Because several planets can be us…
Energy distribution asymmetry of electron precipitation signatures at Mars
Coates, A. J.; Barabash, S.; Lundin, R. +5 more
The different types of asymmetry observed in the energy distributions of electrons and heavy-ions (M/Q=16-44) during signatures of electron precipitation in the Martian ionosphere have been classified. This has been achieved using the space plasma instrumentation of MEX ASPERA-3 from peri-centre altitude to 2200 km. ASPERA-3 ELS observes signature…
Dust Impact Monitor (DIM) onboard Rosetta/Philae: Comparison of experimental results and the theory behind the experiment
Flandes, Alberto; Krüger, Harald; Loose, Alexander +4 more
The Dust Impact Monitor (DIM) experiment on board the Rosetta spacecraft's lander, Philae, is a cube with three sides covered with piezo-electric (PZT) sensors (total sensitive area: ≈70cm2), aimed at measuring the physical properties of millimetric and sub-millimetric dust particles that move near the surface of comet 67P/Churyumov - G…
Hellas Planitia as a potential site of sedimentary minerals
Zalewska Andrzejewska, Natalia
Demonstration of the existence of clay minerals and sulfates of Hellas brings us closer to the finding that water on Mars might have existed earlier and it may even exist now. Hellas Crater is a potential area where episodes of liquid water may appear. Infrared data from OMEGA and PFS installed on the Mars Express probe have been used for the inve…
A modified “Type I migration” model for propeller moons in Saturn's rings
Tiscareno, Matthew S.
We propose a mechanism for the observed non-keplerian motion (Tiscareno et al., 2010a) of “propeller” moons embedded in Saturn's rings. Our mechanism, in which radial variations in surface density - external to, and unaffected by, the embedded moon - result in an equilibrium semimajor axis for the moon due to “Type I” angular momentum exchange (Cr…
An algorithm for geometric correction of full pass TMC imagery of Chandrayaan-1
Radhadevi, P. V.; Solanki, S. S.; Nagasubramanian, V. +4 more
This paper describes the development of an algorithm for geometric correction of Terrain Mapping Camera (TMC) imagery of Chandrayaan-1 (CH-1). The correction is based on a rigorous sensor model. The algorithm incorporates the camera geometry model, satellite data and lunar control points in a rigorous bundle adjustment updating the satellite model…
Retrieving atmospheric dust opacity on Mars by imaging spectroscopy at large angles
Douté, S.; Ceamanos, X.; Appéré, T.
We propose a new method to retrieve the optical depth of Martian aerosols (AOD) from OMEGA and CRISM hyperspectral imagery at a reference wavelength of 1 µm. Our method works even if the underlying surface is completely made of minerals, corresponding to a low contrast between surface and atmospheric dust, while being observed at a fixed geo…
Multi-resolution digital terrain models and their potential for Mars landing site assessments
Muller, Jan-Peter; Warner, Nicholas H.; Gupta, Sanjeev +2 more
One of the key issues for planetary, especially Mars surface exploration, is how to make an objective assessment of criteria for landing sites selection for future rovers, sample return missions and landers considering topographic variables such as slope, altitude and roughness as well as their physical scattering properties. For these purposes, s…