Search
Now showing items 31-40 of 869
Interference of chirp sequence radars by OFDM radars at 77 GHz
Beitrag zu einer Konferenz
(Universität Ulm, 2017-05-04)
Radar sensors are common devices in daily traffic, especially for driver assistance and automotive safety systems. A high sensor density increases the probability of interferences, especially when the sensors occupy a large ...
Automotive radar interference mitigation using a sparse sampling approach
Beitrag zu einer Konferenz
(Universität Ulm, 2017)
The application of radar sensors for driver assistance systems and autonomous driving leads to an increasing probability of radar interferences. Those interferences degrade the detection capabilities and can cause sensor ...
Estimation and cancellation of interferences in automotive radar signals
Beitrag zu einer Konferenz
(Universität Ulm, 2017)
Radar sensors become typical components for automotive driver assistance
systems and autonomous driving. The widespread use of this sensor type leads to an
increasing risk of unwanted interferences. Those interferences ...
Influence of channel parameters on noncoherent massive MIMO systems
Beitrag zu einer Konferenz
(Universität Ulm, 2018)
In multi-user massive MIMO uplink systems, noncoherent detection schemes offer an appealing alternative to classical coherent detection algorithms. Sorted decision-feedback differential detection (DFDD) in combination with ...
Wide-angle scanning cavity antenna element for mobile satcom applications at Ka band
Beitrag zu einer Konferenz
(Universität Ulm, 2016)
A novel dual linearly polarized cavity antenna with
excellent scan performance up to 60◦ in both E- and H-plane is
presented. The highly integrated antenna element for Ka band
Satcom on the move applications is operating ...
Active transmitarray submodule for K/Ka band satcom applications
Beitrag zu einer Konferenz
(Universität Ulm, 2015)
A novel concept for an active transmitarray architecture for K/Ka Band Satcom applications is presented. The highly-integrated antenna system is based on planar multilayer arrangement covering both Satcom frequency bands ...
Enhancement of doppler unambiguity for chirp-sequence modulated TDM-MIMO radars
Beitrag zu einer Konferenz
(Universität Ulm, 2018-05-09)
Current automotive radar sensors enhance the angular resolution using a multiple-input multiple-output approach. The often applied time-division multiplexing scheme has the drawback of a reduced unambiguous Doppler velocity ...
A flexible dielectric leaky-wave antenna at 160 GHz
Beitrag zu einer Konferenz
(Universität Ulm, 2017)
Flexible antennas provide the opportunity to place them on bent or moving surfaces. For leaky-wave antennas the mechanical flexibility offers a second possibility to modify the beam direction besides the frequency scanning ...
Blind adaptive beamforming for automotive radar interference suppression
Beitrag zu einer Konferenz
(Universität Ulm, 2018-06-21)
Radar sensors offer enormous advantages as sensing devices for automated and autonomous driving. However, when multiple of such sensors are operated in a large number of cars, there is a high risk of the occurrence of ...
UAV-based ground penetrating synthetic aperture radar
Beitrag zu einer Konferenz
(Universität Ulm, 2018-08-23)
A novel approach for anti-personnel landmine detection using an unmanned aerial vehicle (UAV) in combination with a ground penetrating synthetic aperture radar (GPSAR) is presented. The objective of the system is to ...