Results 51 to 60 of about 17,640,042 (143)

Signal Processing for Digital Beamforming FMCW SAR

Mathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014
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. Combined with multiple receive apertures, DBF FMCW SAR can obtain high resolution in low pulse repetition frequency, which can increase the ...
Qin Xin, Zhihong Jiang, Pu Cheng, Mi He, Gianluca Ranzi   +4 more
wiley   +1 more source

Treating the innocent victims of trolleys and war

Bioethics, Volume 39, Issue 1, Page 18-25, January 2025.
Abstract Both trolleys and war leave innocent victims to suffer death and injury. Trolley problems accounting for the injured, and not only the dead, tease out intuitions about liability that enhance our understanding of the obligation to provide compensation and medical care to civilian victims of war.
Michael L. Gross
wiley   +1 more source

Experimental Performance Analysis of Digital Beam Forming on Synthetic Aperture Radar [PDF]

, 2008
In this paper, we present the experimental results of a DBF performance to achieve High-Resolution Wide-Swath (HRWS) SAR concept. The measurements were accomplished by a ground-based DBF SAR system exploiting a switched antenna array on the receiver. SAR
Younis, Marwan, Becker, Denis, Wiesbeck, Werner, Kim, Junghyo   +3 more
core  

A Multiple-Input Multiple-Output Synthetic Aperture Radar Echo Separation and Range Ambiguity Suppression Processing Framework for High-Resolution Wide-Swath Imaging

Remote Sensing
Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) is a promising scheme for high-resolution wide-swath (HRWS) imaging. After echo separation processing, a MIMO-SAR system can provide many equivalent phase centers (EPCs) in azimuth ...
Haonan Zhao, Zhimin Zhang, Zhen Chen, Huaitao Fan, Zongsen Lv, Jianzhong Bi   +5 more
doaj   +1 more source

Channel Phase Mismatch Calibration for Multichannel in Azimuth SAR Imaging Based on Eigen-structure Method

Leida xuebao, 2018
As one of the most important means to achieve a High-Resolution and Wide-Swath (HRWS) imaging of the earth, multichannel in azimuth Synthetic Aperture Radar (SAR) have attracted considerable attention in recent years.
Fan Huaitao, Zhang Zhimin, Li Ning
doaj   +1 more source

Unambiguous Reconstruction for Multichannel Nonuniform Sampling SAR Signal Based on Image Fusion

IEEE Access, 2020
Multichannel signal processing in azimuth is a vital technique to enable a wide-swath Synthetic Aperture Radar (SAR) with high azimuth resolution. However, the multichannel high-resolution and wide-swath (HRWS) SAR system always suffers from the problem ...
Liming Zhou, Xiaoling Zhang, Yangyang Wang, Liang Li, Liming Pu, Jun Shi, Shunjun Wei   +6 more
doaj   +1 more source

Moving Target Signals in High Resolution Wide Swath SAR [PDF]

, 2008
In this paper the impact of two high resolution wide swath synthetic aperture radar imaging techniques, extraction of signals from azimuth subsampled spectra and subpulse azimuth beamsteering on transmit, on ground moving target signals is analyzed ...
Krieger, Gerhard, Gabele, Martina
core  

Matrix Inversion Method for Azimuth Reconstruction in Bistatic Spaceborne High-Resolution Wide-Swath SAR System

Leida xuebao, 2017
In bistatic spaceborne High-Resolution Wide-Swath SAR systems (HRWS-SAR), the azimuth reconstruction to obtain a uniform sampling signal or Doppler spectrum is a crucial step in image processing because azimuth signals are generally of non-uniform ...
Lin Yuchuan, Zhang Jianyun, Wu Yongjun, Zhou Qingsong   +3 more
doaj   +1 more source

Staggered-SAR: A New Concept for High-Resolution Wide-Swath Imaging [PDF]

, 2012
Synthetic aperture radar (SAR) is the ideal sensor for the systematic observation of dynamic processes on the Earth’s surface. However, current SAR systems are limited, in that a wider coverage can only be achieved at the expense of a degraded azimuth ...
Villano, Michelangelo, Moreira, Alberto, Krieger, Gerhard   +2 more
core  

A Concept for High Performance Reflector-Based Synthetic Aperture Radar [PDF]

, 2010
The success of current spaceborne Synthetic Aperture Radar (SAR) is boosting the performance requirement of next generation systems. In order to cope with the evolution of SAR, the design of the new systems will need to meet higher requirements for ...
Patyuchenko, Anton, Huber, Sigurd, Anton Patyuchenko, Alberto Moreira, Moreira, Alberto, Younis, Marwan, Krieger, Gerhard, Sigurd Huber, Marwan Younis, Gerhard Krieger   +9 more
core   +1 more source