Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Martin Ummenhofer"'
Autor:
Rodrigo Blázquez‐García, Diego Cristallini, Martin Ummenhofer, Viktor Seidel, Jörg Heckenbach, Daniel O’Hagan
Publikováno v:
IET Radar, Sonar & Navigation, Vol 18, Iss 1, Pp 78-92 (2024)
Abstract Recently, several constellations of broadband low‐Earth orbit communication satellites, such as Starlink or OneWeb, have started to be deployed to provide global internet access. Based on performed analyses, these emerging constellations a
Externí odkaz:
https://doaj.org/article/42d1b1f7f7124f4aa3fb235327d438e4
Autor:
Peter J. Speirs, Martin Ummenhofer, Christof Schüpbach, Matthias Renker, Peter Wellig, Diego Cristallini, Daniel W. O’Hagan, Michael Kohler, Axel Murk
Publikováno v:
Sensors, Vol 22, Iss 7, p 2766 (2022)
Passive radar is a technology that has huge potential for airspace monitoring, taking advantage of existing transmissions. However, to predict whether particular targets can be measured in a particular scenario, it is necessary to be able to model th
Externí odkaz:
https://doaj.org/article/221594832c8c437a8a3deaf21a38ccf2
Publikováno v:
2022 IEEE Radar Conference (RadarConf22).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99ccc57cb293b95113f5c673acb8b589
https://doi.org/10.1109/radarconf2248738.2022.9764342
https://doi.org/10.1109/radarconf2248738.2022.9764342
Autor:
Nabaraj Dahal, Martin Ummenhofer, Tri-Tan Van Cao, Tuyet Vu, Ayobami B. Iji, Michael Kohler, Marion Byrne, Paul E. Berry, Daniel Gustainis
Publikováno v:
2020 IEEE International Radar Conference (RADAR).
Using experimental data captured with a passive radar linear array built by Defence Science and Technology (DST) Group, the performance of various beamforming algorithms (beamformers) for direction-of-arrival (DoA) estimation is comparatively assesse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78a339ec2f6e59202f86d9a4dad328fb
https://doi.org/10.1109/radar42522.2020.9114715
https://doi.org/10.1109/radar42522.2020.9114715
Publikováno v:
2020 IEEE International Radar Conference (RADAR).
Drones and unmanned aerial vehicles (UAVs) are increasingly popular, thus posing danger and threats to infrastructures and public safety. A technology for drone detection and classification would therefore significantly increase the level of security
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2ed3894c9d29a150f69de7879b3e7f3
https://doi.org/10.1109/radar42522.2020.9114747
https://doi.org/10.1109/radar42522.2020.9114747
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 54:1341-1354
We investigate effects of transmitter imperfections in terms of time and frequency offsets on the performance of digital video broadcast-terrestrial based passive radars. To facilitate an accurate reconstruction of the transmitted waveform, transmitt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79e192448d6de154e2cf75e6466f7b84
https://doi.org/10.1109/taes.2017.2785518
https://doi.org/10.1109/taes.2017.2785518
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 53:3008-3019
In this paper, the elevation coverage of common passive radar illuminators of opportunity is evaluated. In constructing radar performance metrics, it is imperative to include the radiation characteristics of the source, both in azimuth and elevation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01af62953e70833b39645ad598a1c731
https://doi.org/10.1109/taes.2017.2724378
https://doi.org/10.1109/taes.2017.2724378
Autor:
Simon Palumbo, J. Palmer, Georgia Bournaka, Ashley Summers, Martin Ummenhofer, Diego Cristallini
Publikováno v:
IET Radar, Sonar & Navigation. 11:922-931
This study investigates the causes and effects of signal mismatch on the performance of a passive bistatic radar that employs reference signal reconstruction processing on a moving receiver platform. In addition to the transmitter's imperfections, na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c7ab811b032087299d3afada53ca67d
https://doi.org/10.1049/iet-rsn.2016.0516
https://doi.org/10.1049/iet-rsn.2016.0516
Publikováno v:
IEEE Aerospace and Electronic Systems Magazine. 32:40-52
Wind energy is an important pillar of the renewable energy mix and has been growing continuously during recent years. Its acceptance among citizens, however, is not only fostered by the environmentally friendly attitude of wind energy, but also restr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1d3d22c63cebe4c60748e5484e5be08
https://doi.org/10.1109/maes.2017.150267
https://doi.org/10.1109/maes.2017.150267
Publikováno v:
2019 IEEE Radar Conference (RadarConf).
This paper presents a comparative analysis of direction of arrival (DOA) estimation techniques for the application in a linear antenna array of a passive bistatic radar (PBR). State of the art and emerging DOA algorithms were investigated in order to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dbf9c4f0f15ce2c1ad097aa553f69e9
https://doi.org/10.1109/radar.2019.8835841
https://doi.org/10.1109/radar.2019.8835841