ISO 22642-2015 PDF

Full title and description

Space data and information transfer systems — TC synchronization and channel coding. This International Standard specifies telecommand (TC) synchronization and channel coding schemes, describing the services, data formats and procedures required to generate and process telecommand data for space applications.

Abstract

ISO 22642:2015 defines synchronization and channel coding schemes in terms of the services provided to users, the data formats to be used and the procedures performed to generate and process those formats. It intentionally does not mandate specific implementations, technologies, or system management activities, and is intended to support interoperability for telecommand links in space data and information transfer systems.

General information

• Status: Published (International Standard, confirmed).
• Publication date: November 2015 (published 16 November 2015 / edition 2 released November 2015).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.140 — Space systems and operations (space data and information transfer systems).
• Edition / version: Edition 2 (2015).
• Number of pages: 41 pages (ISO bibliographic record).

Scope

ISO 22642:2015 applies to telecommand (TC) links in space data and information transfer systems and specifies the synchronization and channel coding schemes to be used. The scope covers definition of services offered to users, the structure and semantics of data formats, and the procedures used to create and process those formats. The document does not prescribe hardware implementations, specific technologies or operational management processes.

Key topics and requirements

• Definition of TC synchronization schemes for telecommand frames and bit streams.
• Specification of channel coding techniques and associated coding rates for telecommand data.
• Descriptions of services provided to users (e.g., frame alignment, error protection requirements).
• Data format definitions for telecommand structures and associated procedures for generation and processing.
• Guidance to ensure interoperability between spacecraft and ground segment telecommand equipment.
• Explicit exclusions: does not mandate implementations, technologies or system management methods.

Typical use and users

Engineers and architects designing spacecraft telecommand subsystems, ground segment communications engineers, system integrators, test laboratories, satellite operators and standards committees use this standard when specifying or verifying telecommand synchronization and channel coding to ensure interoperability and conformance across vendor equipment and mission segments.

Related standards

ISO 22642:2015 replaces earlier editions of the same ISO number (ISO 22642:2005 and associated corrigenda) and sits alongside other space data and information transfer standards developed by ISO technical committees and by CCSDS recommendations addressing telecommand, telemetry and channel coding for space systems. Users commonly use ISO 22642 together with other ISO and CCSDS specifications when specifying full telecommand and communications stacks.

Keywords

telecommand, TC, synchronization, channel coding, error correction, data formats, space communications, interoperability, telecommand frames, space systems.

FAQ

Q: What is this standard?

A: ISO 22642:2015 is an International Standard that specifies telecommand (TC) synchronization and channel coding schemes for space data and information transfer systems.

Q: What does it cover?

A: It covers the services provided to users of telecommand links, the data formats to be used, and the procedures performed to generate and process those formats; it does not prescribe specific implementations, technologies or system management activities.

Q: Who typically uses it?

A: Spacecraft communications engineers, ground segment system designers, test and verification teams, satellite operators and standards/requirements authors who need consistent telecommand synchronization and channel coding definitions.

Q: Is it current or superseded?

A: As published in November 2015 (Edition 2), ISO 22642:2015 is the current ISO edition replacing the 2005 edition; the ISO bibliographic record shows it as published and in the confirmed lifecycle stage (reviewed according to ISO procedures).

Q: Is it part of a series?

A: It is part of the ISO family of standards addressing space data and information transfer systems (work from ISO/TC 20/SC 13) and is typically used with other ISO and CCSDS recommendations covering telecommand, telemetry and channel coding.

Q: What are the key keywords?

A: telecommand (TC), synchronization, channel coding, error correction, data formats, space communications, interoperability.