Alexander Borghgraef

Research scientist 

CISS – Research Unit Lasers & Optronics / 

Mechanics – Robotics & Autonomous Systems
Royal Military Academy

Address

Av. De La Renaissance 30, 1000 Brussels, Belgium

Contact Information

Call: +32-(0)2-44-136-66

Email: Alexander.Borghgraef@mil.be

Alexander Borghgraef is a research scientist with a background in theoretical physics and extensive experience in remote sensing, pattern matching and video and behaviour analysis for detection and tracking, applied to SAR, optical, infrared and acoustic sensor data. 

His main research work has been on object detection in a maritime context, including small target detection on the sea surface and the detection of ship wakes. Recently his work has evolved to include the use of thermal, optical and acoustic sensors for UAS detection, and the use of free-space optical communication for UAS command and control. He has worked in both national (BE MOD) and international (ESA, EDA, H2020, EC) projects, and has represented the Belgian Defence in several NATO workgroups and measurement campaigns on the topics of C-UAS and FSOC. He is also a licensed civilian RPAS pilot.

Alexander is organically a researcher of the research unit Lasers & Optronics of the CISS department, but supports the RAS team in the COURAGEOUS project where he leads the preparation for the Belgian trial.








Publications

2024

  • A. Borghgraef, M. Vandewal, and G. De Cubber, “COURAGEOUS: test methods for counter-UAS systems," in In Proceedings SPIE Sensors + Imaging, Target and Background Signatures X: Traditional Methods and Artificial Intelligence, 2024, p. 131990D.
    [BibTeX] [Download PDF] [DOI] 
    @inproceedings{spie_alex,
title={COURAGEOUS: test methods for counter-UAS systems},
author={Borghgraef, Alexander and Vandewal, Marijke and De Cubber, Geert},
year={2024},
booktitle={In Proceedings SPIE Sensors + Imaging, Target and Background Signatures X: Traditional Methods and Artificial Intelligence},
publisher = {SPIE},
location = {Edinburgh, United Kingdom},
unit= {meca-ras, ciss},
project= {COURAGEOUS},
volume = {13199},
editor = {Karin Stein and Ric Schleijpen},
organization = {International Society for Optics and Photonics},
publisher = {SPIE},
pages = {131990D},
keywords = {counter-UAS, drone, border protection, standardization, measurement campaign, law enforcement, DTI, evaluation methods},
doi = {10.1117/12.3030928},
url = {https://doi.org/10.1117/12.3030928}
}

2022

  • A. Borghgraef, F. B. Othmen, and M. Vandewal, “Obtaining ground truth data in C-UAS trials," in Target and Background Signatures VIII, 2022, p. 122700B.
    [BibTeX] [Download PDF] [DOI] 
    @inproceedings{10.1117/12.2635723,
author = {Alexander Borghgraef and Fatma Ben Othmen and Marijke Vandewal},
title = {{Obtaining ground truth data in C-UAS trials}},
volume = {12270},
booktitle = {Target and Background Signatures VIII},
editor = {Karin Stein and Ric Schleijpen},
organization = {International Society for Optics and Photonics},
publisher = {SPIE},
pages = {122700B},
keywords = {C-UAS, sensor evaluations, ground truth},
year = {2022},
doi = {10.1117/12.2635723},
URL = {https://doi.org/10.1117/12.2635723},
unit= {ciss}
}

2017

  • O. L. L. Tellez, A. Borghgraef, and E. Mersch, “The Special Case of Sea Mines," in Mine Action, C. Beumier, D. Closson, V. Lacroix, N. Milisavljevic, and Y. Yvinec, Eds., Rijeka: IntechOpen, 2017.
    [BibTeX] [Download PDF] [DOI] 
    @incollection{Tellez17,
author = {Olga Lucia Lopera Tellez and Alexander Borghgraef and Eric Mersch},
title = {The Special Case of Sea Mines},
booktitle = {Mine Action},
publisher = {IntechOpen},
address = {Rijeka},
year = {2017},
editor = {Charles Beumier and Damien Closson and Vinciane Lacroix and Nada Milisavljevic and Yann Yvinec},
chapter = {11},
doi = {10.5772/66994},
url = {https://doi.org/10.5772/66994},
unit= {ciss}
}

2010

  • A. Borghgraef, O. Barnich, F. D. Lapierre, V. M. Droogenbroeck, W. Philips, and M. Acheroy, “An Evaluation of Pixel-based Methods for the Detection of Floating Objects on the Sea Surface," EURASIP Journal on Applied Signal Processing (JASP), 2010.
    [BibTeX] [DOI] 
    @article{Borghgraef2010EURASIP,
year = {2010},
author = {A. Borghgraef and O. Barnich and F.D. Lapierre and M. Van Droogenbroeck and W. Philips and M. Acheroy},
title = {An Evaluation of Pixel-based Methods for the Detection of Floating Objects on the Sea Surface},
journal = {EURASIP Journal on Applied Signal Processing (JASP)},
eid = {978451},
numpages = {11},
doi = {10.1155/2010/978451},
unit= {ciss},
keywords = SIC09
}

  • F. D. Lapierre, A. Borghgraef, and M. and Vandewal, “Statistical Real-time Model for Performance Prediction of Ship Detection from Microsatellite Electro-Optical Imagers," EURASIP Journal on Applied Signal Processing (JASP), 2010.
    [BibTeX] [DOI] 
    @article{Lapierre2010EURASIP,
year = {2010},
author = {Fabian D. Lapierre and Alexander Borghgraef and and Marijke Vandewal},
title = {Statistical Real-time Model for Performance Prediction of Ship Detection from Microsatellite Electro-Optical Imagers},
journal = {EURASIP Journal on Applied Signal Processing (JASP)},
eid = {475948},
numpages = {15},
doi = {10.1155/2010/475948},
unit= {ciss},
keywords = SIC09
}

2009

  • A. Borghgraef, F. Lapierre, W. Philips, and M. Acheroy, “Matched filter based detection of floating mines in IR spacetime," in Electro-Optical Remote Sensing, Photonic Technologies, and Applications III, 2009, p. 74820U.
    [BibTeX] [Download PDF] [DOI] 
    @conference{borghgraef:74820U,
author = {Alexander Borghgraef and Fabian Lapierre and Wilfried Philips and Marc Acheroy},
editor = {Gary W. Kamerman and Ove K. Steinvall and Keith L. Lewis and Richard C. Hollins and Thomas J. Merlet and Gary J. Bishop and John D. Gonglewski},
collaboration = {},
title = {Matched filter based detection of floating mines in {IR} spacetime},
publisher = {SPIE},
year = {2009},
booktitle = {Electro-Optical Remote Sensing, Photonic Technologies, and Applications III},
volume = {7482},
number = {1},
eid = {74820U},
numpages = {11},
pages = {74820U},
location = {Berlin, Germany},
url = {http://link.aip.org/link/?PSI/7482/74820U/1},
doi = {10.1117/12.830224},
unit= {ciss}
}

2006

  • A. Borghgraef and M. Acheroy, “Using optical flow for the detection of floating mines in IR image sequences.," in Proceedings of SPIE Optics and Photonics in Security and Defence 2006, Stockholm, Sweden, 2006.
    [BibTeX] 
    @InProceedings{ OF_mines_OPSD_2006,
title = "Using optical flow for the detection of floating mines in {IR} image sequences.",
booktitle = "Proceedings of SPIE Optics and Photonics in Security and Defence 2006",
author = "A. Borghgraef and M. Acheroy",
address = "Stockholm, Sweden",
volume = "6395",
year = "2006",
month = sep,
keywords = "SIC06",
pdf = "http://www.sic.rma.ac.be/~aborghgr/articles/SPIE_OPSD_2006.pdf",
unit= {ciss}
}

2004

  • A.Borghgraef and S.Gautama, “Change detection in SAR images: spatial accuracy analysis," in IEEE Intl. Geoscience and Remote Sensing Symposium, Anchorage, USA, 2004.
    [BibTeX] 
    @InProceedings{ IGARSS_2004,
title = "Change detection in SAR images: spatial accuracy analysis",
booktitle = "IEEE Intl. Geoscience and Remote Sensing Symposium",
month = sep,
author = "A.Borghgraef and S.Gautama",
address = "Anchorage, USA",
year = "2004",
unit= {ciss}
}

  • S.Gautama and A.Borghgraef, “Remote Sensing in Transition," , R.Goossens, Ed., Millpress Netherlands, 2004, pp. 61-68.
    [BibTeX] 
    @InBook{ Remote_Sensing_in_Transition,
title = "Remote Sensing in Transition",
author = "S.Gautama and A.Borghgraef",
editor = "R.Goossens",
publisher = "Millpress Netherlands",
pages = "61-68",
chapter = "On the use of computer vision for quality assessment of vector data",
year = "2004",
unit= {ciss}
}

2003

  • A.Borghgraef and S.Gautama, “Analysis of spatial quality for change detection using SAR images," in 14th ProRISC workshop on Circuits, Systems and Signal Processing, Veldhoven, Netherlands, 2003.
    [BibTeX] 
    @InProceedings{ ProRISC_2003,
title = "Analysis of spatial quality for change detection using SAR images",
booktitle = "14th ProRISC workshop on Circuits, Systems and Signal Processing",
author = "A.Borghgraef and S.Gautama",
address = "Veldhoven, Netherlands",
year = "2003",
month = nov,
unit= {ciss}
}

  • S.Gautama and A.Borghgraef, “Using graph matching to compare VHR satellite images with GIS data," in Proceedings IEEE International Geoscience and Remote Sensing Symposium 2003, Toulouse, France, 2003.
    [BibTeX] 
    @InProceedings{ GraphMatching_IGARSS_2003,
title = "Using graph matching to compare VHR satellite images with GIS data",
booktitle = "Proceedings IEEE International Geoscience and Remote Sensing Symposium 2003",
author = "S.Gautama and A.Borghgraef",
address = "Toulouse, France",
year = "2003",
month = jul,
unit= {ciss}
}

2002

  • A.Borghgraef and S.Gautama, “Performance study of genetic algorithms for graph matching problems," in 3rd IEEE Benelux Signal Processing Symposium 2002, Leuven, Belgium, 2002.
    [BibTeX] 
    @InProceedings{ IEEE_SPS_2002,
title = "Performance study of genetic algorithms for graph matching problems",
booktitle = "3rd IEEE Benelux Signal Processing Symposium 2002",
author = "A.Borghgraef and S.Gautama",
edition = "3",
year = "2002",
address = "Leuven, Belgium",
unit= {ciss}
}

  • S.Gautama, A.Borghgraef, and I.Bruyland, “Automatic registration of satellite images with GIS databases," in Proceedings Advanced Concepts for Intelligent Vision Systems ACIVS 2002, 2002, p. Gent, Belgium.
    [BibTeX] 
    @InProceedings{ ACIVS_2002,
title = "Automatic registration of satellite images with GIS databases",
booktitle = "Proceedings Advanced Concepts for Intelligent Vision Systems ACIVS 2002",
author = "S.Gautama and A.Borghgraef and I.Bruyland",
pages = "Gent, Belgium",
year = "2002",
unit= {ciss}
}

Address

Robotics & Autonomous Systems Department of Mechanics
Royal Military Academy
Avenue De La Renaissance 30
1000 Brussels, Belgium

Contact Information

Tel: +32(0)244-14108

Mail: ras@rma.ac.be

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