SLS Area
OVERVIEW - SPACE LINK SERVICES AREA (SLS)
Welcome to the Space Link Services (SLS) Collaborative Work
Environment.
The Space Link services area is in charge, within CCSDS, to develop
efficient space link communications systems common to all participating
agencies. A space link interconnects a spacecraft with its ground
support system or with another spacecraft. Agencies' new generations of
space missions require telecommand and telemetry capabilities beyond
current technologies. These new needs are for higher data rates, better
link performances, more performing ranging systems, together with lower
cost, mass and power and higher security.
More specifically, SLS area concentrates on layers 1 & 2 (of OSI
protocol stack), namely : RF & modulation, channel coding and data link
layer, for both long-haul (e.g.: spacecraft to ground) and proximity
links (e.g.: orbiter to lander). Two additional functions are also
covered by the SLS area : data compression for end to end data transfer
optimization, and ranging for accurate orbit determination.
The area is composed of specialized working group whose objective is
to develop specific recommendations. One recommendation will typically
cover one OSI layer or sub-layer. This layering of recommendations
maximizes flexibility and interoperability with other commercial
protocols (e.g. : TCP/IP).
PUBLICATIONS
SLS Area Approved Publications can be accessed by
clicking here. All CCSDS Approved Publications can be accessed by
clicking here.
POINTS OF CONTACT
Area
Director: Ignacio Aguilar Sánchez
ESA/European Space Agency
ESA/ESTEC
Keplerlaan 1
AZ Noordwijk
2201
Telephone: +31 71 56 58628
E-mail:
ignacio.aguilarsanchez@esa.int
Bio:
Click Here
Deputy
Area Director: Gilles Moury
CNES/Centre National d'Etudes Spatiales
18, Avenue Edouard Belin
31401 Toulouse Cedex 4
France
Telephone: +33 5 61 27 37 90
FAX: +33 5 61 28 19 96
E-mail:
Gilles.Moury@cnes.fr
Bio:
Click Here
MAILING LIST
sls@mailman.ccsds.org
Click here to join mail list
Click here to view archives
SLS-RFM
OVERVIEW - RF MODULATION WORKING GROUP (SLS-RFM)
Welcome to the RF Modulation Working Group Collaborative Work
Environment. The RF Modulation Working Group (SLS-RFM) falls under the
Space Link Services (SLS) Areas of the CCSDS.
Agencies’ new generations of space missions require telecommand and
telemetry capabilities beyond current technologies to interconnect a
spacecraft with its ground support system, or with another spacecraft.
These new needs are for higher data rates, better link performances,
more performing ranging systems, together with lower cost, mass and
power and higher security.
POINTS OF CONTACT
Chair: Dennis Lee
NASA/Jet Propulsion Laboratory
9800 Oak Grove Dr
Pasadena, CA 91109
Telephone: (818) 354-6908
E-mail:
Dennis.K.Lee@jpl.nasa.gov
Deputy Chair: Gunther Sessler
ESA/European Space Agency
Robert Bosch Strasse No. 5
64293 Darmstadt
Germany
Telephone:
E-mail:
Gunther.Sessler@esa.int
MAILING LIST
sls-rfm@mailman.ccsds.org
Click here to join mail list
Click here to view archives
CHARTER
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SLS-C&S
OVERVIEW - SPACE LINK CODING & SYNCHRONIZATION WORKING GROUP
(SLS-C&S)
Welcome to the Space Link Coding & Synchronization Working Group
Collaborative Work Environment. The Space Link Coding & Synchronization
Working Group (SLS-C&S) falls under the Space Link Services (SLS) Areas
of the CCSDS.
Agencies’ new generations of space missions require telecommand and
telemetry capabilities beyond current technologies to interconnect a
spacecraft with its ground support system, or with another spacecraft.
These new needs are for higher data rates, better link performances,
together with lower cost, mass and power and higher security.
The wide range of environment (space-Earth or space-space, near
Earth congested bands and deep space link operations in extreme
conditions of SNR, links dependent of atmospheric conditions in the new
high frequency bands, optical links) requires coding systems with
different levels of power efficiency and bandwidth efficiency, or
different levels of link reliability or delivered data quality;
This work will concentrate on updating the existing set of Channel
Coding Blue Books to incorporate recommended coding scheme for new
bandwidth efficient codes with low complexity. The update work includes
also the extraction of the coding layer out of CCSDS 211.0-B Prox-1
Protocol.
POINTS OF CONTACT
Chair:
Andrea Modenini
ESA/European Space Agency
ESTEC
Keplerlaan 1
2200AZ Noordwijk
Netherlands
Telephone: +31 71 565 3439
E-mail:
andrea.modenini@esa.int
Deputy
Chair: Kenneth Andrews
NASA/Propulsion Laboratory
Mail stop 238-420
4800 Oak Grove Drive
Pasadena, CA 91109
Telephone: NA
E-mail:
Kenneth.S.Andrews@jpl.nasa.gov
MAILING LIST
sls-cc@mailman.ccsds.org
Click here to join mail list
Click here to view archives
CHARTER
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SLS-MHDC
OVERVIEW - DATA COMPRESSION WORKING GROUP (SLS-DC)
Welcome to the Data Compression Working Group Collaborative Work
Environment. The Data Compression Working Group (SLS-MHDC) falls under
the Space Link Services (SLS) Areas of the CCSDS.
On-board data compression is needed to make full use of limited
spacecraft resources like data storage and downlink capacity.
Multispectral & hyperspectral images can occupy enormous data volumes,
and so compression algorithms specifically designed to exploit the
three-dimensional structure of such images can provide tremendous
benefit to space missions.
The Multispectral & Hyperspectral Data Compression working group has
developed the CCSDS-123.0-B-1 standard, a state-of-the-art
low-complexity lossless compressor.
The working group is now working on extending the CCSDS-122.0-B-1
(two-dimensional) image compressor by adding a spectral transform stage
to provide multispectral and hyperspectral (three-dimensional) image
compression.
POINTS OF CONTACT
Chair: Englin (Mark) Wong
NASA/Goddard Space Flight Center
Code 564 / Instrument Electronics Development Branch
8800 Greenbelt Road Greenbelt, MD 20771
Telephone: NA
E-mail:
mark.wong@nasa.gov
Deputy Chair: Lucana Santos
ESA/European Space Research and Technology Centre
Keplerlaan 1 NL-2201
AZ Noordwijk
The Netherlands
Telephone: NA
E-mail:
lucana.santos@esa.int
MAILING LIST
sls-dc@mailman.ccsds.org
Click here to join mail list
Click here to view archives
Click here to view old SLS-MHDC archives
CHARTER
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SLS-SLP
OVERVIEW - SPACE LINK PROTOCOLS WORKING GROUP (SLS-SLP)
Welcome to the Space Link Protocols Working Group Collaborative Work
Environment. The Space Link Protocols Working Group (SLS-SLP) falls
under the Space Link Services (SLS) Areas of the CCSDS.
This WG develops and adapts wherever possible link layer protocols
for new mission environments (proximity communication, formation flying,
optical communication, missions utilizing high rate telemetry and
telecommand.
In line with the evolutions in the CCSDS link layer protocols which
occurred in the recent years, e.g. development of the Proximity-1 Space
Link Protocol, it has become necessary to update and complete the Green
Books related to these protocols.
POINTS OF CONTACT
Chair:
Greg Kazz
NASA/Jet Propulsion Laboratory
M/S: 301-170U
4800 Oak Grove Drive
Pasadena, CA 91109-8099
USA
Telephone: +1 818 393 6529
FAX: +1 818 393 9815
E-mail:
Greg.J.Kazz@jpl.nasa.gov
Deputy
Chair: Matthew Cosby
UKSA
E-mail:
matt.cosby@goonhilly.org
MAILING LIST
sls-slp@mailman.ccsds.org
Click here to join mail list
Click here to view archives
CHARTER
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SLS-SEA-DLS
OVERVIEW - SPACE DATA LINK LAYER SECURITY WORKING GROUP
(SLS-SEA-DLS)
Welcome to the Space Data Link Layer Security Working Group
Collaborative Work Environment. The Space Data Link Layer Security
Working Group (SLS-SEA-DLS) falls under the Space Link Services (SLS)
Areas of the CCSDS.
The objectives of this Working Group is to develop a recommendation
for a security protocol operating at the data link layer of CCSDS
spacelinks. Target missions are civilian missions (science, earth
observation, telecommunications, ...). This security protocol should
provide authentication and/or encryption both for uplink and downlink.
It should be compatible with CCSDS TM, TC and AOS data link protocols
and be independent from any specific cryptographic algorithm.
POINTS OF CONTACT
Chair:
Gilles Moury
CNES/Centre National d'Etudes Spatiales
18, Avenue Edouard Belin
31401 Toulouse Cedex 4
France
Telephone: +33 5 61 27 37 90
FAX: +33 5 61 28 19 96
E-mail:
Gilles.Moury@cnes.fr
Deputy
Chair: Howard Weiss
Parsons
7110 Samuel Morse Drive
Columbia, MD 20146
Telephone: +1.443.430.8089
FAX: +1.443.430.8238
E-mail:
howard.weiss@parsons.com
MAILING LIST
sls-sea-dls@mailman.ccsds.org
Click here to join mail list
Click here to view archives
CHARTER
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