XML Specification for Navigation Data Messages - CCSDS

DRAFT XML SPECIFICATION FOR NAVIGATION DATA MESSAGES
axis). The rotation constructs shall be used to encapsulate the keywords associated with the
structure of one of the rotation sequences. Some entries include
angles only, or rates only, or both angles and rates. The following NDM/XML tags shall be
used within the rotation structure:
Tag
Associated Rotation Tag in the
followed immediately by
.
The and elements shall be composed of three
tags: , , and . Depending on whether
angles or rates are being described, these (i=1,2,3) keywords have different
attributes.
For angles, the attributes shall be ‘angle=’ and ‘units="deg"’. The ‘angle’ attribute
is required; the ‘units’ attribute is optional. The choices for ‘angle’ are ‘X_ANGLE’,
‘Y_ANGLE’, ‘Z_ANGLE’, which are the keywords from the KVN AEM. For example the
following shows rotation angles for a 321 rotation sequence:
1.234
5.678
9.1011
For rates, the attributes shall be ‘rate=’ and ‘units="deg/s"’. The ‘rate’ attribute is
required; the ‘units’ attribute is optional. The choices for ‘rate’ are ‘X_RATE’,
‘Y_RATE’, ‘Z_RATE’, which are the keywords from the KVN AEM. For example the
following shows rotation rates for a 321 rotation sequence:
1.234
5.678
9.1011
CCSDS 505.0-R-2 Page 4-7 June 2009