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: Gian Paolo Calzolari
ESA/European Space Agency
ESOC - OPS-OT
Robert Bosch Str. 5
64293 Darmstadt
Germany
Telephone: +49 6151 90 2913
FAX: +49 6151 90 2178
E-mail:
Gian.Paolo.Calzolari@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: Enrico Vassallo
ESA/European Space Operations Centre
Robert Bosch Strasse 5
D-64293 Darmstadt
Germany
Telephone:+49 6151 902 585
FAX: +49 6151 903 046
E-mail:
Enrico.Vassallo@esa.int
Deputy 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
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: Aaron Kiely
NASA/Jet Propulsion Laboratory
Mail Stop 238-420
4800 Oak Grove Drive
Pasadena, CA 91109-8099
Telephone: +1 818 393-9048
FAX: +1 818 354-6825
E-mail:
Aaron.B.Kiely@jpl.nasa.gov
Deputy 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
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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