{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Planetary Data System", "hasEmail": "mailto:pds-operator@jpl.nasa.gov"}, "description": "The Mars Express MARSIS Active Ionospheric Sounder (AIS) full      resolution data set includes all spectral information      calibrated in units of spectral density for the Mars Express      seventhextended mission, from spacecraft event time (SCET)      transmit frequency followed by a time series of spectral density      measurements of the received power.  Browse products contain      a spectrogram overview plot and individual ionograms for each      sounding  activity.", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.mex-m-marsis-3-rdr-ais-ext8-v1.0;urn:nasa:pds:context_pds3:data_set:data_set.mex-m-marsis-3-rdr-ais-ext8-v1.0::99.0", "keyword": ["__"], "license": "https://www.usa.gov/government-works", "modified": "2026-06-22", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "planetary plasma interactions"}, "theme": ["Planetary Science"], "title": "MARS EXPRESS MARS MARSIS RDR                               ACTIVE IONOSPHERE SND EXT8 V1.0"}