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 additionnal 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: Jean-Luc Gerner
ESA/European Space Technology Centre
Postbus 299
2200 A.G. Noordwijk
The Netherlands
Telephone: +31 71 565 4473
FAX: +31 71 565 4596
E-mail: Jean-Luc.Gerner@esa.int
Bio:
Click Here
 Deputy
Area Director: Gilles Moury
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
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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
MAILING LIST
sls-rfm@mailman.ccsds.org
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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: Gian
Paolo Calzolari
European Space Agency
ESOC - OPS-OT
Robert Bosch Str. 5
64293 Darmstadt
Germany
Telephone: +49 6151 90 2913
FAX: +49 6151 90 2178
MAILING LIST
sls-cc@mailman.ccsds.org
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SLS-MHDC
OVERVIEW - MULTISPECRAL HYPERSPECTRAL DATA COMPRESSION WORKING GROUP (SLS-MHDC)
Welcome to the Multispectral Hyperspectral Data Compression Working Group
Collaborative Work Environment. The
Multispectral Hyperspectral Data
Compression Working Group (SLS-MHDC) falls under
the Space Link Services (SLS) Areas of the CCSDS.
There is a need for data reduction on-board
spacecraft in order to make full use of limited
on-board resources like data storage and
downlink capacity. Images represent a vast
amount of the data collected on-board spacecraft
and that significant compression can be obtained
on images while preserving acceptable image
quality for the user;
POINTS OF CONTACT
 Chair:
Aaron Kiely
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
MAILING LIST
sls-mhdc@mailman.ccsds.org
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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
MAILING LIST
sls-slp@mailman.ccsds.org
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SLS-RNG
OVERVIEW - RANGING WORKING GROUP (SLS-RNG)
Welcome to the Ranging Working Group
Collaborative Work Environment. The Ranging
Working Group (SLS-RNG) 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.
This work is dedicated to the development of
recommendations for high performance ranging
techniques to satisfy the needs of future
agencies missions.
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
MAILING LIST
sls-rng@mailman.ccsds.org
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SLS-HRU
OVERVIEW - HIGH RATE UPLINK WORKING GROUP (SLS-HRU)
Welcome to the High Rate Uplink Working Group
Collaborative Work Environment. The High Rate Uplink WG (SLS-HRU) falls under the Space Link Services (SLS)
Areas of the CCSDS.
There is renewed activity for further exploration of the
moon. This includes both nonmanned and manned missions.
Furthermore, there is a need to transfer the
communication technology developed for lunar missions to
deep space whenever possible. In this endeavor, it is
prudent for the CCSDS to develop the underlying
requirements to enable higher rate uplinks beyond the
current CCSDS capability. This WG will develop
requirements for achieving increases in uplink data rate
by taking an integrated approach in investigating
bandwidth efficient modulation techniques, along with
the appropriate channel coding methods coupled with the
use of the most appropriate link layer 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
MAILING LIST
sls-hru@mailman.ccsds.org
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SLS-LEC
OVERVIEW - LONG ERASURE CODES BIRDS OF A FEATHER (SLS-LEC)
Welcome to the Long Erasure Codes Birds of a
Feather Collaborative Work Environment. The
Long Erasure Codes Birds of a Feather (SLS-LEC)
falls under the Space Link Services (SLS) Areas
of the CCSDS.
This work will investigate long
erasure-correction codes suitable for CCSDS
environments, and compare them with
retransmission schemes. 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.
POINTS OF CONTACT
Chair: Gian
Paolo Calzolari
European Space Agency
ESOC - TOS/GSD
Robert Bosch Str. 5
64293 Darmstadt
Germany
Telephone: +49 6151 90 2913
FAX: +49 6151 90 2178
MAILING LIST
sls-cc@mailman.ccsds.org
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join mail list
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here to view archives
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SLS-SEA-DLS
OVERVIEW - SPACE DATA LINK LAYER SECURITY BIRDS OF A FEATHER (SLS-SEA-DLS)
Welcome to the Space Data Link Layer Security Birds of a
Feather Collaborative Work Environment. The
Space Data Link Layer Security Birds of a Feather (SLS-SEA-DLS)
falls under the Space Link Services (SLS) Areas
of the CCSDS.
This group will investigate the opportunity for
CCSDS of developing a security protocol,
providing authentication and encryption,
compatible with the CCSDS data link layer
protocols : TM, TC, AOS both uplink and
downlink. It will survey existing implementation
of security functions at data link layer for TM/TC
links within agencies. It will identify all
constraints and requirements with respect to
those security functions. It will eventually
finally issue a Users Requirements Document and
a charter for the WG responsible for the
detailed definition and validation of the
security protocol. This protocol should ideally
be compatible with any authentication/encryption
algorithm used, and with all 4 CCSDS TM/TC data
link protocols.
POINTS OF CONTACT
Chair: Gilles Moury
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:
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Here
 Deputy
Chair: Howard Weiss
SPARTA, Inc.
7110 Samuel Morse Drive
Columbia, MD 20146
USA
Telephone: +1.443.430.8089
FAX: +1.443.430.8238
MAILING LIST
sls-sea-dls@mailman.ccsds.org
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