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A novel sparse boosting method for crater detection in the high resolution planetary image

Wang, Yan; Yang, Gang; Guo, Lei

Impact craters distributed on planetary surface become one of the main barriers during the soft landing of planetary probes. In order to accelerate the crater detection, in this paper, we present a new sparse boosting (SparseBoost) method for automatic detection of sub-kilometer craters. The SparseBoost method integrates an improved sparse kernel …

Martian electron density profiles retrieved from Mars Express dual-frequency radio occultation measurements

Cui, J.; Zhang, S. J.; Guo, P. +4 more

The S- and X-band dual-frequency Doppler radio occultation observations obtained by the Mars Express Radio Science (MaRS) experiments are reduced in this study. A total of 414 Martian electron density profiles are retrieved covering the period from DOY 93 2004 to DOY 304 2012. These observations are well distributed over both longitude and latitud…