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PDS_VERSION_ID                    = PDS3                               LABEL_REVISION_NOTE               = "                                     2015-10-09 S.Joy: Initial draft;"                                   RECORD_TYPE                       = FIXED_LENGTH                       RECORD_BYTES                      = 72                                 OBJECT                            = INSTRUMENT                          INSTRUMENT_HOST_ID               = MR9                                 INSTRUMENT_ID                    = RSS                                                                                                        OBJECT                           = INSTRUMENT_INFORMATION                                                                                      INSTRUMENT_NAME                 = "RADIO SCIENCE SUBSYSTEM"            INSTRUMENT_TYPE                 = "RADIO SCIENCE"                      INSTRUMENT_DESC                 = "                                                                                                             Instrument Overview                                                    ===================                                                      The Mariner 9 (MR9) Radio Science investigations                       utilized instrumentation with elements on the spacecraft and           at the NASA Deep Space Network (DSN).  Much of this was                shared equipment, being used for routine telecommunications            as well as for Radio Science.  The performance and                     calibration of both the spacecraft and tracking stations               directly affected the radio science data accuracy, and they            played a major role in determining the quality of the                  results.  The spacecraft part of the radio science                     instrument is described immediately below; that is followed            by a description of the DSN (ground) part of the instrument.                                                                                                                                                       Instrument Specifications - Spacecraft                                 ======================================                                   The Mariner 9 spacecraft telecommunications                            subsystem served as part of a radio science subsystem for              investigations of Mars.  Many details of the subsystem are             unknown; its 'launch date' is known to be 1971-05-30.                                                                                         Instrument Id                  : RSS                                   Instrument Host Id             : MR9                                   Pi Pds User Id                 : UNK                                   Instrument Name                : RADIO SCIENCE SUBSYSTEM               Instrument Type                : RADIO SCIENCE                         Build Date                     : UNK                                   Instrument Mass                : UNK                                   Instrument Length              : UNK                                   Instrument Width               : UNK                                   Instrument Height              : UNK                                   Instrument Manufacturer Name   : UNK                                                                                                                                                                               Instrument Overview - Spacecraft                                       ================================                                         The Doppler shift of the S-band telemetry signal during                occultation of the spacecraft by Mars provided the vertical            distribution of the index of refraction of the Martian                 atmosphere. These data yield the vertical distribution of              neutral and ionized species."                                                                                                            END_OBJECT                       = INSTRUMENT_INFORMATION                                                                                     OBJECT                           = INSTRUMENT_REFERENCE_INFO            REFERENCE_KEY_ID                = "KLIOREETAL1972A"                   END_OBJECT                       = INSTRUMENT_REFERENCE_INFO                                                                                  OBJECT                           = INSTRUMENT_REFERENCE_INFO            REFERENCE_KEY_ID                = "KLIOREETAL1972B"                   END_OBJECT                       = INSTRUMENT_REFERENCE_INFO                                                                                  OBJECT                           = INSTRUMENT_REFERENCE_INFO            REFERENCE_KEY_ID                = "KLIOREETAL1973"                    END_OBJECT                       = INSTRUMENT_REFERENCE_INFO          END_OBJECT                        = INSTRUMENT                                                                                                END