ISO 18424:2013

Space data and information transfer systems — XML Telemetric and Command Exchange (XTCE) ISO 18424:2013

Publication date:   May 29, 2013

Scope

ISO 18424:2013 addresses the need for a standardized information model capable of supporting Telemetry/Telecommand (TM/TC) definitions across the widest possible range of space domain activities. The goal is to allow TM/TC definitions to be exchanged between different organizations and systems, often at the boundaries of mission phases, without the need for customized import/export, re-validation, or even re-implementation of mission databases.
The scope of ISO 18424:2013 is limited to the satellite telemetry and commanding meta-data constructs necessary to perform satellite and payload data processing. ISO 18424:2013 includes the meta-data needed to:

Define the structure and sequence of both CCSDS packets and TDM frames;
Define the data manipulation required for packaging and unpacking of individual data items;
Describe command data including command identification, argument specification, and validation criteria;
Define parameter and command encoding;
Define data properties including including default values, validity criteria, and data dependencies.

The scope of ISO 18424:2013 does not extend to:

Data distribution mechanisms or rules;
Command and data protocol specifications;
RF or analog stream characterization;
Data grouping including aggregation and coherent data sets;
Data representation (visualization properties);
Scheduling configuration properties;
Orbital properties;
Displays;
Flight Software.

ISO 18424:2013 addresses only the definition of TM/TC data, but is not a specification for the transfer of live or historical TM/TC data. It is a meta-data specification, not a data specification.