Results 21 to 30 of about 35,288,445 (167)

Experimental Performance Investigation of Digital Beamforming on Synthetic Aperture Radar [PDF]

open access: yes, 2008
In this paper, we present the experimental results of a Digital Beam Forming (DBF) Synthetic Aperture Radar (SAR) performance on the purpose of the High- Resolution Wide-Swath (HRWS) SAR concept.
Junghyo Kim   +5 more
core   +1 more source

IF-Sampling Digital Beamforming with Bit-Stream Processing. [PDF]

open access: yes
Beamforming in receivers improves signal-to-noise ratio (SNR), and enables spatial filtering of incoming signals, which helps reject interferers. However, power consump-tion, area, and routing complexity needed with an increasing number of elements have ...
Jeong, Jaehun
core   +7 more sources

Energy Consumption Analysis of Beamforming and Cooperative Schemes for Aircraft Wireless Sensor Networks

open access: yesApplied Sciences, 2020
In this paper, the eight schemes for aircraft wireless sensor networks are investigated, which are single-hop array beamforming schemes (including analog beamforming (ABF), and digital beamforming (DBF)), non-cooperative schemes (including single-hop and
Seung-Hwan Kim   +2 more
doaj   +1 more source

ERROR ESTIMATION AND UNAMBIGUOUS RECONSTRUCTION FOR CHINESE FIRST DUAL-CHANNEL SPACEBORNE SAR IMAGING [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Multichannel synthetic aperture radar (SAR) is a significant breakthrough to the inherent limitation between high-resolution and wide-swath (HRWS) faced with conventional SAR.
T. Jin, T. Jin, X. Qiu, D. Hu, C. Ding
doaj   +1 more source

Elevation Multi-Channel Imbalance Calibration Method of Digital Beamforming Synthetic Aperture Radar

open access: yesRemote 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   +1 more source

A Single Receive Channel DBF Method for Ultra-Wideband Radar

open access: yesIEEE Access, 2019
In this paper, we present a space code agility-based single receive channel digital beamforming (DBF) method for ultra-wideband radar. The proposed single channel DBF method outperforms the existing single channel DBF method with a space-time coded array
Liu Nan   +3 more
doaj   +1 more source

Multidimensional Waveform Encoding for Synthetic Aperture Radar Remote Sensing [PDF]

open access: yes, 2007
This paper introduces and analyses the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Moreira, Alberto   +5 more
core   +1 more source

Fast DBF for conformal arrays based on 2D Fourier decomposition

open access: yesThe Journal of Engineering, 2019
Digital array radars with conformal arrays are attractive for platforms with limited installation space such as aircraft and unmanned aerial vehicles.
Yuan Yao, Guangxin Wu
doaj   +1 more source

Advanced Synthetic Aperture Radar Based on Digital Beamforming and Waveform Diversity [PDF]

open access: yes, 2008
This paper introduces innovative SAR system concepts for the acquisition of high resolution radar images with wide swath coverage from spaceborne platforms.
Alberto Moreira   +7 more
core   +1 more source

Study on Adaptive Digital Beamforming for Spaceborne SAR Based on Capon Spatial Spectrum Estimation

open access: yesLeida xuebao, 2014
In rough mountainous areas, beam-pointing mismatch problems always arise when a spaceborne Synthetic Aperture Radar (SAR) uses the traditional Digital BeamForming (DBF) approach in elevation to receive echoes, leading to the degradation of the receiver’s
Feng Fan, Dang Hong-xing, Tan Xiao-min
doaj   +1 more source

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