Konzepte für zuverlässige Immissionsmessungen an 5G massive MIMO-Basisstationen. - In: Creating a compatible future, (2020), S. 449-455
https://doi.org/10.15488/10057
Untersuchungen zur korrekten Immissionserfassung von gepulsten Signalen mit dem SRM-3006 am Beispiel von 5G. - In: Creating a compatible future, (2020), S. 465-471
https://doi.org/10.15488/10059
Entwicklung und Verifikation eines Mess- und Bewertungsverfahrens der elektromagnetischen Immission durch ITS-G5. - In: Creating a compatible future, (2020), S. 457-464
https://doi.org/10.15488/10058
Jamming an uncalibrated GNSS array receiver of distributed antenna elements for concealed installation in passenger cars. - In: 2020 European Navigation Conference (ENC), (2020), S. 1-10
Interference signals are a severe threat to any GNSS receiver. Due to the low reception power of satellite signals, even comparably weak interferences can significantly decrease the positioning accuracy of the receiver or lead to a complete signal loss. Therefore, any active interference signal has to be mitigated to ensure a continuous and safe operation. This is especially important in the field of automated driving, where the permanent awareness of a human being is no longer presumed and cars rely solely on GNSS to determine the absolute position necessary for navigation. While uniform rectangular arrays have shown to be the most effective method against interference signals by providing the ability to spatially mitigate incident signals, their size prevents an application in cars produced for the consumer mass market. This paper presents an arrangement, where a set of two distributed linear arrays is used, which seems promising for a concealed installation and allows the application of spatial signal processing algorithms such as beamforming and nulling. Consequences on the positioning accuracy from the joint processing of signals from distributed antenna elements are discussed and the capability to mitigate interference sources is demonstrated.
https://doi.org/10.23919/ENC48637.2020.9317483
Bi-static delay-Doppler reference for cooperative passive vehicle-to-X radar applications. - In: IET microwaves, antennas & propagation, ISSN 1751-8733, Bd. 14 (2020), 14, S. 1749-1757
Automotive radar systems are indispensable for advanced driver assistance systems and traffic safety. Besides existing monostatic radar techniques, bi-static radar sensing like passive coherent location offers additional options to improve the radar visibility of vulnerable road users. Regarding the testing and evaluation of signal processing algorithms including parameter estimation, it is essential to provide electromagnetically shielded and reproducible measurement conditions, in addition to field tests in real traffic scenarios. This study describes the possibility to emulate relevant performance parameters for bi-static radar scenarios in the frequency range from 1 GHz to 6 GHz in a metal-shielded semi-anechoic chamber. Of special interest are the bi-static angle between transmitter, target, and receiver, and the resulting bi-static Doppler frequencies of a realistic vehicular traffic scenario. According to the concept of cooperative passive coherent location, Doppler scattering measurements are presented and compared to electromagnetic simulations. The authors find promising agreement between measured and ground truth data in the delay-Doppler spectrum.
https://doi.org/10.1049/iet-map.2019.0991
In situ impedance measurements on postmortem porcine brain. - In: Current directions in biomedical engineering, ISSN 2364-5504, Bd. 6 (2020), 3, 20203037, insges. 4 S.
The paper presents an experimental study where the distinctness of grey and white matter of an in situ postmortem porcine brain by impedance measurements is investigated. Experimental conditions that would allow to conduct the same experiment on in vivo human brain tissue are replicated.
https://doi.org/10.1515/cdbme-2020-3037
Monostatic RCS measurements of representative road traffic objects in the 76 … 81 GHz frequency band. - In: 2020 IEEE Radar Conference (RadarConf20), (2020), insges. 6 S.
https://doi.org/10.1109/RadarConf2043947.2020.9266391
Bi-static reflectivity patterns of vulnerable road users in the C-V2X frequency range. - In: 2020 IEEE Radar Conference (RadarConf20), (2020), insges. 6 S.
https://doi.org/10.1109/RadarConf2043947.2020.9266284
Geometry- and angle-dependent monostatic scattering of microwave absorbers. - In: 2020 Antenna Measurement Techniques Association Symposium (AMTA), (2020), insges. 6 S.
https://ieeexplore.ieee.org/document/9280861
Bi-static reflectivity measurements of vulnerable road users using scaled radar objects. - In: 2020 Antenna Measurement Techniques Association Symposium (AMTA), (2020), insges. 6 S.
https://ieeexplore.ieee.org/document/9280857