XML Specification for Navigation Data Messages - CCSDS

DRAFT XML SPECIFICATION FOR NAVIGATION DATA MESSAGES
4.11 CREATING A TDM INSTANTIATION
NOTE – See annex A, figure A-9, for an example TDM instantiation.
4.11.1 THE TAG
A TDM instantiation shall be delimited with the root element tags using the
standard attributes documented in 4.3 above.
The final attributes of the tag shall be ‘id’ and ‘version’. The ‘id’ attribute shall be
‘id="CCSDS_TDM_VERS"’. The ‘version’ attribute for the version of the TDM described
in reference [3] shall be ‘version="1.0"’.
4.11.2 THE HEADER
The standard NDM header shall follow the tag (see 4.4).
4.11.3 THE BODY
4.11.3.1 GENERAL
The TDM shall consist of one or more constructs (see figure 3-2).
Each shall consist of a section and a section. The
keywords in the and sections shall be those specified in reference [3].
The rules for including any of the keyword tags in the NDM are the same as those specified
for the TDM in reference [3]. Tags for keywords specified in reference [3] shall be all
uppercase as in reference [3].
NOTE – In addition to the TDM keywords specified in reference [3], there is a special tag
associated with the TDM body as described in the next subsection.
4.11.3.2 THE TAG
The tag is used to encapsulate the keywords associated with one of the
tracking data types in the TDM. The consists of two subcomponents:
the time tag ( tag) and one specific data type (e.g., ). Thus a
received frequency observation would appear in an NDM/XML TDM:
2008-200T12:34:56.789
8415000000
CCSDS 505.0-R-2 Page 4-20 June 2009