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h Research
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RESEARCH
Main achievements of the project
Work carried out until now allowed us to
consolidate the development of a simulator thanks
to a more precise definition of underlying models
through work on the regional project MOSISMAR,
in collaboration with IETR (Rennes1 University)
and the BOOST Technologies SME. Telecom
Bretagne validated the algorithms (modelling of
the SAR processing and of the hydrodynamic
interactions) developed the previous year and also
completed the geophysical modelling through
other models of environmental phenomena.
Modelling of the SAR processing module
continued at IETR. Algorithms evolved from
validation in the case of terrestrial environments
to processing in the marine environment with the
help of BOOST Technologies and the collaboration
of other laboratories. In the final stage, the various
elements (modules) were interconnected and the
connexion was tested. However the aims outlined
initially were not all accomplished, but they
allowed us to build a solid proposition in the
Brittany Maritime Cluster (competitiveness
cluster).
The MODENA project received recognition from
the Brittany Maritime Cluster at the end of 2006.
2007 was given over to research for finance for the
project. We obtained finance from the DGE (and the
FUI – Fond Unique Interministériel ie Unique Interministries
fund), due to strong support from the
DGA and the Brittany Maritime cluster for part of
the project The Breton Region also funded the
project. The project is jointly lead by ARTAL (for
DGE requirements) and Telecom Bretagne. The
partners of the project are either academic
partners (Université de Rennes, Université de
Nantes, Université de Brest and ENSIETA) or
companies /SME (THALES, CLS/BOOST, MAREE,
SATIMO). 2008 is formally the first year of the
MODENA project. The aims of the project are more
precisely defined in an accompanying document,
available on demand. Complementary studies on
analysis of the colour of surface water were
carried out under an IFREMER contract.
Besides, the GALILEOCEAN project, approved by
the Brittany Maritime Cluster, is currently seeking
funding.Being in a partnership consolidation
phase, another project: “DTC France” has been
developed in conjunction with BOOST
Technologies, which has since become CLS. DTC
France is a PEA type project on a DGA contract
with ONERA – Thales as a co-contractor. We come
into the project as a subcontractor of CLS in
workpackage 2 (Predefinition of a SAR mode on
satellite transmissions of opportunity in mono or
multi-transmitters) and more precisely in bi-static
reception and feasibility study of monotransmitter
SAR images. This work was also
carried out with other partners of the project,
particularly the GEA (Groupe d’Electromagnétisme
Appliqué, Applied Electromagnetism Group, EA
3455) of Paris X University which focussed on the
SAR multi transmitters imagery (multi static
cases). The aim of our work was to study the
feasibility and performance of a passive SAR
(Synthetic Aperture Radar) detection system for
terrestrial targets. Two types of transmitters of
opportunity were studied
• The GPS system satellites, which
advantageously offer a large and permanent
cover, allowing multistatism but have weak
transmission power (-160 dBW in reception)
and require long duration observation (low
speed transmitters)
• SAR civilian satellites, with higher speed and
more power but offer intermittent and
restrained cover. This contract is a
complement to the MOPS (“Marine
Opportunity Passive Systems “) project,
presented and accepted at RTRA Europôle
Mer (European Sea advanced research
network).
Finally 2008 saw the completion of the VIGISAT
project, reception station which will be installed on
the Telecom Bretagne site.
Publications
Articles in peer-review journals
[1] Nicolas Bon, Ali Khenchaf, René Garello. GLRT subspace detection for
range and Doppler distributed targets. IEEE transactions on aerospace
and electronic systems, april 2008, vol. 44, n° 2, pp. 678-696
[2] Jean-Marc Le Caillec. Hypothesis testing for nonlinearity detection
based on an MA model. IEEE transactions on signal processing, february
2008, vol. 56, n° 2, pp. 816-821
[3] Jean-Marc Le Caillec. Time series modeling by a second Order
Hammerstein system. IEEE transactions on signal processing, january
2008, vol. 56, n° 1, pp. 96-110
[4] Frédéric Maussang, Michèle Rombaut, Jocelyn Chanussot, Maud
Amate. Fusion of local statistical parameters for buried underwater
mine detection in sonar imaging. EURASIP journal on advances in signal
processing, 2008, vol. 2008
Thesis
[5] Vincent Gras. Caractérisation de la signature radar de la surface
océanique et son application à la détection d'objets flottants. Th. doct. :
Traitement du signal et télécommunications: Université de Rennes 1
Institut Télécom ; Télécom Bretagne : 2008, 2008telb0068. 197 p.
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