SHARAD onboard MRO
Mars Reconnaissance Orbiter (MRO) is a NASA multipurpose spacecraft designed to conduct reconnaissance and exploration of Mars from orbit.
Launched in 2005, when MRO entered orbit, it joined five other active spacecraft in orbit of or on the planet: Mars Global Surveyor, Mars Express, Mars Odyssey, and two Mars Exploration Rovers; a then record for most spacecraft operational in Mars vicinity. Today the mission is still operative and sending data to Earth.
Onboard MRO, SHARAD (Mars SHAllow RADar sounder), a subsurface sounding radar embarked on the MRO probe to complement the MARSIS instrument on Mars Express, providing lower penetration capabilities (some hundred meters) but much finer resolution (15 metres – untapered – in free space).
In these webpages you will find information about MRO and about SHARAD.