PDS_VERSION_ID           = PDS3

RECORD_TYPE              = STREAM
^ASCII_DOCUMENT          = "gcs.asc"
^ADOBE_PDF_DOCUMENT      = "gcs.pdf"

  OBJECT                   = ASCII_DOCUMENT
  DOCUMENT_NAME            = "THE NEAR GUIDANCE AND CONTROL SYSTEM"
  DOCUMENT_TOPIC_TYPE      = "DATA SET DESCRIPTION"
  INTERCHANGE_FORMAT       = ASCII
  DOCUMENT_FORMAT          = TEXT
  PUBLICATION_DATE         = 1998
  DESCRIPTION              = "This provides and overview of The NEAR Guidance
                              and Control System"
  END_OBJECT               = ASCII_DOCUMENT

  OBJECT                   = ADOBE_PDF_DOCUMENT
  DOCUMENT_NAME            = "THE NEAR GUIDANCE AND CONTROL SYSTEM"
  DOCUMENT_TOPIC_TYPE      = "DATA SET DESCRIPTION"
  INTERCHANGE_FORMAT       = BINARY
  DOCUMENT_FORMAT          = ADOBE_PDF
  PUBLICATION_DATE         = 1998
  DESCRIPTION              = "This provides and overview of The NEAR Guidance
                              and Control System"
  ABSTRACT_TEXT            = "
The Near Earth Asteroid Rendezvous (NEAR) spacecraft guidance and control
system supports all modes of pointing and control for the mission,
including routine control during the long cruise to the asteroid Eros,
high-frequency control of the propulsion subsystem thrusters during orbital
corrections, precise pointing for science data collection, and spacecraft
safety in emergencies. The attitude determination and control algorithms
have been structured to provide the necessary capability, autonomy, high
throughput, and relatively easy transitions among modes. The guidance and
control system includes very few attitude sensors but achieves at least one
level of redundancy for all reasonable failure modes. Its functions are
divided between two redundant computers that are cross-strapped for maximum
flexibility."

  END_OBJECT               = ADOBE_PDF_DOCUMENT

  END