Development of 61-Channel Digital Beamforming (DBF) Transmitter Array for Mobile Satellite Communication [PDF]
Progress in Electromagnetics Research, 2009 An 61-channel digital beamforming transmitter array antenna used in mobile satellite communication is presented in this paper. It can steer 16 beams simultaneously. The interface, architecture and subunits are described in detail. Standard hexagonal array (SHA) and 61-channel RF front ends are designed.
Guang Liang +3 more
exaly +2 more sources
Elevation Multi-Channel Imbalance Calibration Method of Digital Beamforming Synthetic Aperture Radar
Remote Sensing, 2022 The digital beamforming synthetic aperture radar (DBF-SAR) is proposed by scholars as a promising solution to overcome the constraint of the minimum antenna area of the traditional single-channel SAR to achieve high resolution and wide swath (HRWS) by ...
Hao Chen +3 more
doaj +2 more sources
Initial Demonstration of an X-Band Digital Beamforming (DBF) Receive Array [PDF]
2006 IEEE Aerospace Conference, 2006 This paper presents the architecture and initial measured performance of an X-band digital beamforming (DBF) plug-and-play receive array. This processor was designed to steer four independent simultaneous beams over the entire X-band with 32 independent channels, an instantaneous bandwidth of 15 MHz, and a spur-free dynamic range of at least 65 dB ...
Spendley, D. N. +4 more
exaly +2 more sources
Dynamic antenna clustering along with low RF complexity digital beamforming. [PDF]
PLoS ONEThis paper presents a digital beamforming technique with low radio frequency (RF) complexity that can preserve antenna weights between the antenna aperture and the digital baseband processing unit.
Usman Haider +4 more
doaj +2 more sources
Inter-Channel Error Calibration Method for Real-Time DBF-SAR System Based on FPGA [PDF]
SensorsElevation Digital Beamforming (DBF) technology is key to achieving high-resolution wide-swath (HRWS) imaging in spaceborne Synthetic Aperture Radar (SAR) systems.
Yao Meng +7 more
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The Latest Developments in Spaceborne High-Resolution Wide-Swath SAR Systems and Imaging Methods [PDF]
SensorsAzimuth resolution and swath width are two crucial parameters in spaceborne synthetic aperture radar (SAR) systems. However, it is difficult for conventional spaceborne SAR to simultaneously achieve high-resolution wide-swath (HRWS) due to the minimum ...
Ruizhen Song, Wei Wang, Weidong Yu
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A Novel MIMO–SAR Solution Based on Azimuth Phase Coding Waveforms and Digital Beamforming [PDF]
Sensors, 2018 In multiple-input multiple-output synthetic aperture radar (MIMO–SAR) signal processing, a reliable separation of multiple transmitted waveforms is one of the most important and challenging issues, for the unseparated signal will degrade the ...
Fang Zhou +4 more
doaj +2 more sources
Fast Adaptive Beamforming for Weather Observations with Convolutional Neural Networks
Remote Sensing, 2023 Polarimetric phased array radar (PAR) can achieve high temporal resolutions for improved meteorological observations with digital beamforming (DBF). The Fourier method performs DBF deterministically, and produces antenna radiation patterns with fixed ...
Yoon-SL Kim +3 more
doaj +1 more source
Remote Sensing, 2021 Scan-on-receive (SCORE) digital beamforming (DBF) in elevation can significantly improve the signal-to-noise ratio (SNR) and suppress range ambiguities in spaceborne synthetic aperture radar (SAR).
Wei Xu +5 more
doaj +1 more source
Integrating Agile Waveforms With DBF for HRWS SAR Imagery and Adaptive Jamming Suppression
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Range ambiguity resolving and deceptive jamming suppression are both challenges for high-resolution wide-swath SAR imagery. With the accommodation of the digital beamforming (DBF) techniques, agile waveforms are of potential to tackle the ambiguity ...
GanE Dai, Sha Huan, Lei Zhang
doaj +1 more source