BS Z 18:2000

1 INTRODUCTION
1.1 Purpose
1.2 Scope
1.3 Applicability
1.4 Rationale
1.5 Bit numbering convention and nomenclature
1.6 References
2 OVERVIEW
2.1 General
2.2 The source coder
2.3 Packetization of coded data
2.4 Error control
3 ADAPTIVE ENTROPY CODER
3.1 Code specification
3.2 Fundamental sequence
3.3 Sample splitting
3.4 Low entropy options
3.5 No compression
3.6 Code selection
4 PREPROCESSOR
4.1 Preprocessor function
4.2 Predictors
4.3 Reference sample
4.4 Prediction error mapper
5 DATA FORMAT
5.1 Lossless data structures
5.2 Packet format
6 COMPRESSION IDENTIFICATION PACKET (OPTIONAL)
6.1 Compression identification packet structure
6.2 CIP primary header
6.3 Packet data field
ANNEX A Glossary of acronyms and terms
ANNEX B Informative references
FIGURES
2-1 Schematic of the source coder
3-1 The adaptive entropy coder with a preprocessor
3-2 Split-sample format
4-1 A preprocessor
4-2 Preprocessor using a unit-delay predictor
5-1 CDS format when sample-splitting option is selected
5-2 CDS format when no-compression option is selected
5-3 CDS format when zero-block option is selected
5-4 CDS format when the second-extension options is selected
5-5 Packet format for / CDSes
6-1 Compression identification packet structure
6-2 Source configuration field
TABLE
3-1 Fundamental sequence codeword as a function of the
      preprocessed samples
3-2 Zero-block fundamental sequence codewords as a function
      of the number of consecutive all-zeros blocks
5-1 Selected code option identification key

Defines a number of valid CCSDS Referencing Environments to facilitate open system data interchange. Each referencing environment is defined in terms of a syntax specification for referencing external objects within each of these environements.

This International Standard specifies the requirements for referencing environments for standard formatted data units for space data and information transfer systems.