Results 71 to 80 of about 37,267,212 (171)
Digital Beamforming Implementation on an FPGA Platform [PDF]
, 2007 This work is part of UPC contribution to the CORPA (Cost-Optimised high Performance Active Receive Phase Array antenna for mobile terminals) project of ESA (European Space Agency)The objective of the work presented is to implement a Digital Beamforming ...
Bernal Casas, David
core
Suppression of Multipath and Jamming Signals by Digital Beamforming for GNSS/Galileo Applications
, 2002 Digital Beamforming (DBF) has been studied to obtain automatic beam steering towards desired signals and simultaneous elemination of multipath and jamming signals at GNSS receivers. Limitations of conventional multipath and jamming suppression techniques
Konovaltsev, A. +3 more
core
A Ka/X-band digital beamforming synthetic aperture radar for earth observation
, 2015 A Ka/X-band digital beamforming (DBF) spaceborne Synthetic Aperture Radar (SAR) is presented in this paper. To overcome the performance limitations of current SAR systems while reducing the cost, size, mass and power consumption, it employs a multi ...
E. Arnieri +50 more
core +2 more sources
A Novel Wide Area Multiple Azimuth Beam ISAR Imaging System
IEEE Access, 2019 A novel multiple azimuth beams (MAB) inverse synthetic aperture radar (ISAR) system, as well as, the corresponding processing algorithms are proposed in this paper, which is a promising technology for wide area surveillance (WAS).
Taoli Yang +3 more
doaj +1 more source
Digital beamforming using evolutionary optimization algorithms
, 2017 Digital Beamforming (DBF) is a critical and important technology in different kinds of areas such as modern radar and wireless communication systems. With DBF, multiple adaptive beams can be flexibly formed to enhance signals and suppress interferences ...
Yao, Qiang
core
RFI Geolocation for Elevation Multichannel SAR System Using Beam Modulation
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingElevation multichannel synthetic aperture radar (SAR) with digital beamforming (DBF) capability can significantly enhance system gain by virtue of scan-on-receive (SCORE) technology, becoming the core system for achieving high resolution and wide swath ...
Zhen Chen +7 more
doaj +1 more source
Extrapolation-RELAX Estimator Based on Spectrum Partitioning for DOA Estimation of FMCW Radar
IEEE Access, 2019 This paper proposes an extrapolation-RELAX estimator based on spectrum partitioning (SP) for the direction of arrival (DOA) estimation of frequency-modulated continuous-wave (FMCW) radar.
Sangdong Kim +3 more
doaj +1 more source
Signal Processing for Digital Beamforming FMCW SAR [PDF]
, 2020 According to the limitations of single channel Frequency Modulation Continuous Wave (FMCW) Synthetic Aperture Radar (SAR), Digital Beamforming (DBF) technology is introduced to improve system performance.
Qin Xin, Zhihong Jiang, Mi He, Pu Cheng
core
Full-Duplex in Massive Multiple-Input Multiple-Output
IEEE Open Journal of Vehicular TechnologyIn-band full-duplex (FD) operation can double the spectral efficiency of massive multiple-input multiple-output (mMIMO) systems by allowing simultaneous transmission and reception over the same time/frequency slot. However, the main challenge encountered
Tho Le-Ngoc +8 more
doaj +1 more source
Supression of Multipath and Jamming Signals by Digital Beamforming for GPS/Galileo Applications
, 2003 Digital beamforming (DBF) has been studied to obtain automatic beam steering towards desired signals and simultaneous elimination of multipath and jamming signals at GNSS receivers, which is made possible by spatial and temporal digital signal processing.
Konovaltsev, A. +3 more
core