{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Thomas Morgan", "hasEmail": "mailto:thomas.h.morgan@nasa.gov"}, "description": "This data set contains archival raw, partially processed, and      ancillary/supporting radio science data acquired during the        Extended Mission (EXT) phase of the Mars Global Surveyor (MGS)     mission.  The radio observations were carried out using the MGS    spacecraft and Earth-based receiving stations of the NASA Deep     Space Network (DSN).  The observations were designed to test       the spacecraft radio system, the DSN ground system, and MGS        operations procedures; to be used in generating high-resolution    gravity field models of Mars; and for estimating density and       structure of the Mars atmosphere.  Of most interest are likely     to be the Orbit Data File and Radio Science Receiver files, in     the ODF and RSR directories, respectively, which provided the      raw input to gravity and atmospheric investigations.  The EXT      phase began on 1 February 2001.  Data were organized in            approximately chronological order and delivered on a set of        several hundred CD volumes at the rate of 2-3 CD's per week        or DVD volumes at the rate of about 2 per month.  Typical          volume of a one-day ODF was 300-400 kB.  Typical volume of an      RSR was 5-10 MB, and there could be 0-30 RSR's per day depending   on DSN schedules and observing geometry.", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.mgs-m-rss-1-ext-v1.0_25ji-yc6z", "issued": "2021-05-21", "keyword": ["mars", "mars-global-surveyor"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=MGS-M-RSS-1-EXT-V1.0", "license": "http://www.usa.gov/publicdomain/label/1.0/", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.nasa.gov"], "theme": ["Earth Science"], "title": "MARS GLOBAL SURVEYOR RAW         \n                                      DATA SET - EXT V1.0"}