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F-4. Orbit

TT&C Applications

F-4.1 Mission Planning

F-4.1.1 Input - RFI activity

type : service request

to/from : from Generate Timeline function

method : discrete message

sync/async : async

timing : none

API standards : TBD

data arguments : no arguments

status reply : completion status

F-4.1.2 Output - SV orbit ephemeris

type : data transfer

to/from : to Orbit Ephemeris data store

method : DB write

sync/async : sync

timing : none

API standards : SQL, OQL (for implementation)(same comment as F-1.3.1) time - discrete time interval

state_vector - orbitial positon and velocity

status reply : DB write error

F-4.1.3 Output - Orbit events events can also ne with other space objects and ground points event_type - type of event (Orbital, RFI, Viewing)

time - time of event

event - description of event

status reply : DB write error

F-4.2 Telemetry

F-4.2.1 Input - Telemetry data (navigation data)

type : data transfer

to/from : from Quality Assessed EU Measurands data store or

from the Process Telemetry function

method : DB read or discrete message

sync/async : sync DB read or async message

timing : none or TBD for real-time orbit

API standards : none

data arguments : stream_id {id, value}+

stream_id - identifier for telemetry stream

id - identifier for telemetry measurand

value - value for telemetry measurand

status reply : none

F-4.3 Attitude

F-4.3.1 Output - SV orbit ephemeris

type : data transfer

to/from : to Orbit Ephemeris data store

method : DB write

sync/async : sync

timing : none

API standards : SQL, OQL (for implementation)(same comment as F-1.3.1) time - discrete time interval

state_vector - orbitial positon and velocity

status reply : DB write error

F-4.3.2 Output - SV orbit events

type : data transfer

to/from : to Orbit Ephemeris data store

method : DB write

sync/async : sync

timing : none

API standards : SQL, OQL (for implementation)

data arguments : {event_type, time, event }+

event_type - type of event (Orbital, RFI, Viewing)

time - time of event

event - description of event

status reply : DB write error

Support Applications

F-4.4 Comm. and Range Segments

F-4.4.1 Input - Real-time calibration data

type : data transfer

to/from : from Comm. and Range segments

method : discrete message

sync/async : sync

timing : none

API standards : ADCCP, SCN-SIS-000508

data arguments : {message ID, report text}

status reply : none

F-4.4.2 Input - Raw tracking data

type : data transfer

to/from : from Comm. and Range Segments

method : discrete message

sync/async : sync

timing : 1/sec average

API standards : ADCCP, SCN-SIS-000508

data arguments : {time, azimuth, elevation, range, range_rate}

time - time of pointing angle

azimuth - number of degrees from true north

elevation - number of degrees from horizontal

range - range data

range_rate - range rate data

status reply : none

F-4.4.3 Output - Acquisition data (antenna pointing angles, NORAD 2LMES)

type : data transfer

to/from : to Comm. and Range Segments

method : discrete message

sync/async : sync for APA; async for 2LMES

timing : none

API standards : ADCCP,SCN-SIS-000508

data arguments : {azimuth, elevation, time} {element_data}

azimuth - number of degrees from true north

elevation - number of degrees from horizontal

time - time of pointing angle

element_data -

status reply : none

Mission Specific Applications

F-4.5 Vehicle Contractor

F-4.5.1 Input - SV properties

type : data transfer

to/from : from vehicle contractor

method : DB read

sync/async : async

timing : none

API standards : SQL, OQL (for implementation)

data arguments : vehicle_id, sv_properties, TBD

vehicle_id - identifier for space vehicle

sv_properties - data items describing space vehicle

properties

status reply : DB read error