DEFSTAN 21-26(PT2)/1(2000) : 2000

TITLE PAGE
SCOPE
FOREWORD
Sponsorship
Conditions of Release
Categories of NES
Related Documents
Health and Safety
Additional Information
CONTENTS
SECTION 1 - STANDARD UNITS OF MEASURE
            1.1 SI Units
            1.2 Units of Angular Measure
            1.3 Units of Time
            1.4 Units for Ordinal Date
            1.5 Units for Time of Day
            1.6 Cartesian Measurement Conventions
            1.7 Orientation of an Object
            1.8 Reference Plane
            1.9 Orientation of an Object Relative to the
                 Surface of the Earth
            1.10 Linear Measure
            1.11 Angular Measure
            1.12 Position of an Object on the Surface of
                 the Earth
            1.13 Latitude and Longitude
SECTION 2 - DATA PARAMETER REPRESENTATION
            2.1 General
            2.2 Fixed Point Representation
            2.3 Reference Byte
            2.4 Byte Offset
            2.5 Integers
            2.6 Sign Convention
            2.7 Floating Point Representation
            2.8 Alphanumeric Representation
            2.9 Binary Coded Decimal Representation
            2.10 Discrete Representation
            2.11 Single bit Discrete Data
            2.12 Multi bit Discrete Data
SECTION 3 - DATA ELEMENT FORMATTING
            3.1 General
            3.2 Fixed Point Data Element Formatting
            3.3 Floating Point Data Element Formatting
            3.4 Alphanumeric Data Element Formatting
            3.5 Binary Coded Decimal Data Element Formatting
            3.6 Discrete Data Element Formatting
            3.7 Format of Ordinal Date
            3.8 Format of Time of the Day
ANNEX A - RELATED DOCUMENTS
ANNEX B - DEFINITIONS
ANNEX C - PROCUREMENT CHECK LIST
ANNEX D - CARTESIAN CO-ORDINATE SYSTEMS
ANNEX E - SPHERICAL POLAR CO-ORDINATES
ANNEX F - EARTH MODELS
ANNEX G - HEIGHT AND Z Compared
ANNEX H - FLOATING POINT FORMAT
ALPHABETICAL INDEX

Applies to Weapon Systems and Equipments within a single Surface Ship or Submarine environment and is intended for intra-ship digital data communications between devices, equipments, sub systems or systems which contain a data processing capability.