CCSD3ZF0000100000001NJPL3IF0PDSX00000001
PDS_VERSION_ID                     = PDS3

RECORD_TYPE                        = STREAM
OBJECT                             = INSTRUMENT
  INSTRUMENT_HOST_ID               = ULY
  INSTRUMENT_ID                    = GWE

  OBJECT                           = INSTRUMENT_INFORMATION
    INSTRUMENT_NAME                = "GRAVITATIONAL WAVE EXPERIMENT"
    INSTRUMENT_TYPE                = "RADIO SCIENCE"
    INSTRUMENT_DESC                = "

      Instrument Overview
      ===================

      (excepted from: [BERTOTTIETAL1992A])

      Abstract. -- Since the optimum size of a gravitational wave
      detector is the wave length, interplanetary dimensions are
      needed for the mHz band of interest. Doppler tracking of
      Ulysses will provide the most sensitive attempt to date at the
      detection of gravitational waves in the low frequency band.
      The driving noise source is the fluctuations in the refractive
      index of interplanetary plasma. This dictates the timing of
      the experiment to be near solar opposition and sets the target
      accuracy for the fractional frequency change at 3.0 x 10^-14
      for integration times of the order of 1000 sec. The
      instrumentation utilized by the experiment is distributed
      between the radio systems on the spacecraft and the seven
      participating ground stations of the Deep Space Network and
      Medicina. Preliminary analysis is available of the
      measurements taken during the Ulysses first opposition test."
  END_OBJECT                       = INSTRUMENT_INFORMATION

  OBJECT                           = INSTRUMENT_REFERENCE_INFO
    REFERENCE_KEY_ID               = "BERTOTTIETAL1992A"
  END_OBJECT                       = INSTRUMENT_REFERENCE_INFO
  OBJECT                           = INSTRUMENT_REFERENCE_INFO
    REFERENCE_KEY_ID               = "BERTOTTIETAL1992B"
  END_OBJECT                       = INSTRUMENT_REFERENCE_INFO
  OBJECT                           = INSTRUMENT_REFERENCE_INFO
    REFERENCE_KEY_ID               = "IESS1993"
  END_OBJECT                       = INSTRUMENT_REFERENCE_INFO

END_OBJECT                         = INSTRUMENT
END