Space Link Extension - Service Management - CCSDS

DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT
Parameter Name Parameter Definition/Description Data Type
stateEndTime- See table 5-48.
WindowLag
Data
Units
Applicable Service Agreement
Parameter
communicationMode
The ground-spacecraft
communication mode for tracking the
return carrier. Legal values are:
‘1-way’
one way: a carrier for a return space
link only is present:
The return carrier frequency tracking
is in reference to the carrierFrequency
parameter value of the
R401SpaceLinkCarrier-
Profile data set.
NOTE – This indicates that the
return carrier frequency is
being generated in
reference to an on-board
spacecraft resource (e.g.,
oscillator).
‘2-way’—two way: carriers for both
forward and return space links are
present: The return carrier frequency
may be coherent with the forward
carrier as defined by the Carrier
Profile in either a
ReturnCoherenceModel data set
or a ReturnOffsetModel data
set. Both the forward and return
carrier space link service involve the
same antennaRef parameter.
‘3-way’—three way: carriers for
both forward and return space links
are present: The return carrier
frequency may be coherent with the
forward carrier frequency as defined
in a Carrier Profile in either a
ReturnCoherenceModel data set
or a ReturnOffsetModel data set.
The forward and return carrier space
link involves different antennaRef
parameters.
NOTE – Whether the antenna is
selected by UM or CM is
subject to the planning
agreed between the UM and
the CM.
See table 5-14.
modulationIndex See table 5-5.
convolutional-
Coding
rSubcarrier-
Frequency
See table 5-11 for definition. In this
context, this parameter is set to
NULL when subcarrier is not present.
CCSDS 910.11-R-2 Page 5-51 March 2008