The Radiocommunication Data Dictionary RDD ITUR SM'1413

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The Radiocommunication Data Dictionary
(RDD)ITU-R SM.1413

• Presented by David Barrett

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Presentation Overview

• The objectives of the RDD
• An introduction to the contents of the RDD
• Future development
• Converting the RDD into MS Access (by Mr
  Neelesh Kulkarni)
• The Reference Database (by Mr Fabrice
  Evangelisti)

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The RDD contains

• all the data required for the international
  filing process
• clear and consistent descriptions of the data and
  its format
• definition of the conditions of use by radio
  system(s)
• identification of notification process constraints

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The RDD provides

• a tool for improving the exchange of data between
  administrations and between administrations and
  the Bureau
• a tool that can be used to improve aspects of the
  international filing process by providing
• data validation rules (more to be added)
• an opportunity for administrations to review and
  propose the rationalisation of duplicated and
  redundant data

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The RDD enables

• identification of individual data items
• the structure of the data to be presented
• administrations to overcome the problems of
• diversity of terminology and concepts across
  frequency bands and Services
• inconsistent and incomplete definitions located
  in many different documents

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The RDD assists

• development of more comprehensive validation
  tools
• development of forms and Circular Letters
• staff training
• mapping national databases to the international
  data requirements
• overcoming problems for staff not working in
  their own language

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RDD Contents

• Section 1 Introduction
• Section 2 Terrestrial Notification Data
• Section 3 Description of Terrestrial Data Items
• Section 4 Space Advance Publication,
  Notification and Coordination Data
• Section 5 Description of Space Data Items
• Section 6 Data Item Formats
• Section 7 Diagrams
• Section 8 Cross-Reference Tables between RR
  Appendix S4 and RDD
• Section 9 Appendices
• Section 10 Data Item Reference Index

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Example Data Item

•        Apogee Altitude RDD ref S098
• The longest distance from a point on the
  Non-geostationary Orbit to the sub-satellite
  point on the Earths surface. For the purpose of
  this measurement the Earth is considered to be a
  spherical body with no height variation and a
  nominal radius of 6378 km. The sub satellite
  point is the point on a line between the apogee
  and the Earths centre where it passes through
  the earths surface.
• The term apogee is commonly used when the
  Earth is the reference body and may vary if a
  different reference body is used e.g. aphelion
  when the reference body is the sun. A more
  generic term that may also be used is apoapsis.
• Format Integer (in the range 500 to
  99999999) in km.

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Example Data Group

• Administration RDD ref
  S001
• A governmental department, or service, of a
  member state of the ITU responsiblefor
  discharging the obligations undertaken in the
  Constitution, the Conventionand the Regulations
  of the ITU.
• ? An Administration is identified by its Code.
• An Administration may be party to one or more
  Coordination Agreements RDD ref S002
• An Administration may submit one or more
  Correspondence Addresses RDD ref
  S006

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Example Section 4 Data Sheet
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Future plans for development

• updating to include changes introduced at WRC2000
• expansion of the Data Validation Rules
• improved guidance
• inclusion of the Bureau findings
• introduction of hyperlinks