Y. Petillot - Academia.edu (original) (raw)
Papers by Y. Petillot
IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259), 1998
Abstract Describes an obstacle avoidance and path planning system for underwater vehicles based o... more Abstract Describes an obstacle avoidance and path planning system for underwater vehicles based on a multi-beam forward looking sonar sensor. The real-time data flow (acoustic images) at the input of the system is first processed (segmentation and feature ...
2010 IEEE Radar Conference, 2010
AbstractDesigning transmit beampattern with MIMO radars generally requires the waveforms to be a... more AbstractDesigning transmit beampattern with MIMO radars generally requires the waveforms to be able to have arbitrary cross-correlation values. In contrast to the available algorithms, the proposed technique provides a closed-form solution for the synthesis of covariance ...
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010
A method for generating constant envelope (CE) waveforms to realise a given covariance matrix for... more A method for generating constant envelope (CE) waveforms to realise a given covariance matrix for a closely spaced MIMO radar system is proposed. In contrast to available algorithms, the technique provides closed form solutions for finding the required waveforms and suggests that waveforms can be chosen from finite alphabets such as binary-phase shift keying (BPSK) and quadrature-phase shift keying (QPSK).
OCEANS 2009-EUROPE, 2009
... June 2006. [4] S. Negahdaripour, H. Pirsiavash and H. Sekkati, Integration of Motion Cues in... more ... June 2006. [4] S. Negahdaripour, H. Pirsiavash and H. Sekkati, Integration of Motion Cues in Optical and Sonar Videos for 3-D Positioning, Computer Vision and Pattern Recognition, 2007. IEEE Conference, June 2007. [5] A ...
IEE Proceedings - Radar, Sonar and Navigation, 2004
The majority of existing automatic mine detection algorithms which have been developed are robust... more The majority of existing automatic mine detection algorithms which have been developed are robust at detecting mine-like objects (MLOs) at the expense of detecting many false alarms. These objects must later be classified as mine or not-mine. The authors present a model based technique using Dempster -Shafer information theory to extend the standard mine/not-mine classification procedure to provide both shape and size information on the object. A sonar simulator is used to produce synthetic realisations of mine-like object shadow regions which are compared to those of the unknown object using the Hausdorff distance. This measurement is fused with other available information from the object's shadow and highlight regions to produce a membership function for each of the considered object classes. Dempster -Shafer information theory is used to classify the objects using both mono-view and multi-view analysis. In both cases, results are presented on real data.
IEEE Signal Processing Letters, 2000
It has been shown that multiple-input multiple-output (MIMO) radar systems can improve target det... more It has been shown that multiple-input multiple-output (MIMO) radar systems can improve target detection performance significantly by exploiting the spatial diversity gain. We introduce the system model in which the radar target is composed of a finite number of small scatterers and derive the formula to evaluate the theoretical probability of detection for the system having an arbitrary array-target configuration. The results can be used to predict the detection performance of the actual MIMO radar without time-consuming simulations.
... Yvan Petillot 1 , Chris Sotzing 2 , Pedro Patron 1 , David Lane 1 , Joel Cartright 2 ... The ... more ... Yvan Petillot 1 , Chris Sotzing 2 , Pedro Patron 1 , David Lane 1 , Joel Cartright 2 ... The Abstract Layer Interface (ALI) developed in the Ocean Systems Laboratory uses a defined set of messages (or concepts represented in the domain ontology) that are translated to be ...
... The state vector for the tracker is defined as the 3D position and velocity vector: (x, ˙x,y,... more ... The state vector for the tracker is defined as the 3D position and velocity vector: (x, ˙x,y, ˙y,z, ˙z). The algorithm proceeds as follows, where steps 1 to 4 are ... If n is the number of particles, k is the number of targets and t is the number of iterations, then the time complexity is O(tkn). ...
Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in ... more Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in Vlaanderen.
The Journal of Peptide Research, 2009
Clr is one of the two serine proteases of C1, the first component of complement, in which it is a... more Clr is one of the two serine proteases of C1, the first component of complement, in which it is associated in a calcium-dependent manner to the homologous serine protease Cls. This interaction is mediated by the N-terminal region of Clr, which comprises a single epidermal growth factor (EGF)-like module containing the consensus sequence required for calcium binding, surrounded by two CUB modules. With a view to determine the structure of the EGF-like module of Clr and evaluate its contribution to calcium binding, this module ] was synthesized by automated solid-phase methodology using the Boc strategy. A first synthesis using the Boc-His(Z) derivative gave very low yield, due to partial deprotection of His residues leading to chain termination by acetylation, and to insertion of glycine residues. This could be circumvented by using the Boc-His(DNP) derivative and by condensation of appropriate glycine-containing segments. The synthetic peptide was efficiently folded under redox conditions to the species with three correct disulfide bridges, as determined by mass spectrometry and Nterminal sequence analyses of thermolytic fragments. The homogeneity of the synthetic peptide was assessed by reversed-phase HPLC and electrospray mass spectrometry. One-dimensional 'H NMR spectroscopic analysis provided evidence that the EGF-like module had a well defined structure, and was able to bind calcium with an apparent Kd of 10 nm. This value, comparable to that found for the isolated EGF-like modules of coagulation factors IX and X, is much higher than that measured for native Clr. As already proposed for factors IX and X, it is suggested that neighbouring module(s), most probably the N-terminal CUB module, contribute(s) to the calcium binding site. 0 Munksgaard 1997.
IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259), 1998
Abstract Describes an obstacle avoidance and path planning system for underwater vehicles based o... more Abstract Describes an obstacle avoidance and path planning system for underwater vehicles based on a multi-beam forward looking sonar sensor. The real-time data flow (acoustic images) at the input of the system is first processed (segmentation and feature ...
2010 IEEE Radar Conference, 2010
AbstractDesigning transmit beampattern with MIMO radars generally requires the waveforms to be a... more AbstractDesigning transmit beampattern with MIMO radars generally requires the waveforms to be able to have arbitrary cross-correlation values. In contrast to the available algorithms, the proposed technique provides a closed-form solution for the synthesis of covariance ...
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010
A method for generating constant envelope (CE) waveforms to realise a given covariance matrix for... more A method for generating constant envelope (CE) waveforms to realise a given covariance matrix for a closely spaced MIMO radar system is proposed. In contrast to available algorithms, the technique provides closed form solutions for finding the required waveforms and suggests that waveforms can be chosen from finite alphabets such as binary-phase shift keying (BPSK) and quadrature-phase shift keying (QPSK).
OCEANS 2009-EUROPE, 2009
... June 2006. [4] S. Negahdaripour, H. Pirsiavash and H. Sekkati, Integration of Motion Cues in... more ... June 2006. [4] S. Negahdaripour, H. Pirsiavash and H. Sekkati, Integration of Motion Cues in Optical and Sonar Videos for 3-D Positioning, Computer Vision and Pattern Recognition, 2007. IEEE Conference, June 2007. [5] A ...
IEE Proceedings - Radar, Sonar and Navigation, 2004
The majority of existing automatic mine detection algorithms which have been developed are robust... more The majority of existing automatic mine detection algorithms which have been developed are robust at detecting mine-like objects (MLOs) at the expense of detecting many false alarms. These objects must later be classified as mine or not-mine. The authors present a model based technique using Dempster -Shafer information theory to extend the standard mine/not-mine classification procedure to provide both shape and size information on the object. A sonar simulator is used to produce synthetic realisations of mine-like object shadow regions which are compared to those of the unknown object using the Hausdorff distance. This measurement is fused with other available information from the object's shadow and highlight regions to produce a membership function for each of the considered object classes. Dempster -Shafer information theory is used to classify the objects using both mono-view and multi-view analysis. In both cases, results are presented on real data.
IEEE Signal Processing Letters, 2000
It has been shown that multiple-input multiple-output (MIMO) radar systems can improve target det... more It has been shown that multiple-input multiple-output (MIMO) radar systems can improve target detection performance significantly by exploiting the spatial diversity gain. We introduce the system model in which the radar target is composed of a finite number of small scatterers and derive the formula to evaluate the theoretical probability of detection for the system having an arbitrary array-target configuration. The results can be used to predict the detection performance of the actual MIMO radar without time-consuming simulations.
... Yvan Petillot 1 , Chris Sotzing 2 , Pedro Patron 1 , David Lane 1 , Joel Cartright 2 ... The ... more ... Yvan Petillot 1 , Chris Sotzing 2 , Pedro Patron 1 , David Lane 1 , Joel Cartright 2 ... The Abstract Layer Interface (ALI) developed in the Ocean Systems Laboratory uses a defined set of messages (or concepts represented in the domain ontology) that are translated to be ...
... The state vector for the tracker is defined as the 3D position and velocity vector: (x, ˙x,y,... more ... The state vector for the tracker is defined as the 3D position and velocity vector: (x, ˙x,y, ˙y,z, ˙z). The algorithm proceeds as follows, where steps 1 to 4 are ... If n is the number of particles, k is the number of targets and t is the number of iterations, then the time complexity is O(tkn). ...
Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in ... more Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in Vlaanderen.
The Journal of Peptide Research, 2009
Clr is one of the two serine proteases of C1, the first component of complement, in which it is a... more Clr is one of the two serine proteases of C1, the first component of complement, in which it is associated in a calcium-dependent manner to the homologous serine protease Cls. This interaction is mediated by the N-terminal region of Clr, which comprises a single epidermal growth factor (EGF)-like module containing the consensus sequence required for calcium binding, surrounded by two CUB modules. With a view to determine the structure of the EGF-like module of Clr and evaluate its contribution to calcium binding, this module ] was synthesized by automated solid-phase methodology using the Boc strategy. A first synthesis using the Boc-His(Z) derivative gave very low yield, due to partial deprotection of His residues leading to chain termination by acetylation, and to insertion of glycine residues. This could be circumvented by using the Boc-His(DNP) derivative and by condensation of appropriate glycine-containing segments. The synthetic peptide was efficiently folded under redox conditions to the species with three correct disulfide bridges, as determined by mass spectrometry and Nterminal sequence analyses of thermolytic fragments. The homogeneity of the synthetic peptide was assessed by reversed-phase HPLC and electrospray mass spectrometry. One-dimensional 'H NMR spectroscopic analysis provided evidence that the EGF-like module had a well defined structure, and was able to bind calcium with an apparent Kd of 10 nm. This value, comparable to that found for the isolated EGF-like modules of coagulation factors IX and X, is much higher than that measured for native Clr. As already proposed for factors IX and X, it is suggested that neighbouring module(s), most probably the N-terminal CUB module, contribute(s) to the calcium binding site. 0 Munksgaard 1997.