{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Planetary Data System", "hasEmail": "mailto:pds-operator@jpl.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;urn:nasa:pds:context_pds3:data_set:data_set.mgs-m-rss-1-ext-v1.0::2.0", "keyword": ["__"], "license": "https://www.usa.gov/government-works", "modified": "2026-06-15", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "Geosciences"}, "theme": ["Planetary Science"], "title": "MARS GLOBAL SURVEYOR RAW  DATA SET - EXT V1.0"}