Results 41 to 50 of about 318 (138)

Detection and imaging of moving objects with high-resolution wide-swath SAR systems

, 2022
S.977-980An important application of future multi-channel high-resolution wide-swath (HRWS) synthetic aperture radar (SAR) systems is the detection of objects moving on the earth surface (ground moving target indication, GMTI).
Cerutti-Maori, D., Sikaneta, I., Gierull, C.   +2 more
core   +1 more source

Investigation on Beamspace Multiple‐Input Multiple‐Output Synthetic Aperture Radar Data Imaging

International Journal of Antennas and Propagation, Volume 2016, Issue 1, 2016., 2016
The multiple‐input multiple‐output (MIMO) technique can improve the high‐resolution wide‐swath imaging capacity of synthetic aperture radar (SAR) systems. Beamspace MIMO‐SAR utilizes multiple subpulses transmitted with different time delays by different transmit beams to obtain more spatial diversities based on the relationship between the time delay ...
Hongbo Mo, Wei Xu, Zhimin Zeng, Angelo Liseno   +3 more
wiley   +1 more source

MIMO SAR processing for multichannel high-resolution wide-swath radars

, 2022
S.5034-5055This paper addresses signal reconstruction for future multiple-input multiple-output synthetic aperture radars (SARs) equipped with a multichannel antenna to enable wide-area high-resolution imaging.
Cerutti-Maori, D., Sikaneta, I., Gierull, C.H., Klare, J.   +3 more
core   +1 more source

MIMO SAR Using Orthogonal Coding: Design, Performance Analysis, and Verifications

International Journal of Antennas and Propagation, Volume 2015, Issue 1, 2015., 2015
Multiple‐input multiple‐output (MIMO) synthetic aperture radar (SAR) is a promising technology in radar imaging which provides a better balance of azimuth resolution and swath width compared with traditional single‐input single‐output (SISO) SAR. It has the potential to help scientists and engineers to design ambitious SAR system with higher resolution
Yueguan Lin, Yida Fan, Chenglong Jiang, Zhiqiang Wang, Weizeng Shao, Giuseppe Mazzarella   +5 more
wiley   +1 more source

An Efficient Signal Reconstruction Algorithm for Stepped Frequency MIMO‐SAR in the Spotlight and Sliding Spotlight Modes

International Journal of Antennas and Propagation, Volume 2014, Issue 1, 2014., 2014
Multiple‐input multiple‐output (MIMO) synthetic aperture radar (SAR) using stepped frequency (SF) waveforms enables a high two‐dimensional (2D) resolution with wider imaging swath at relatively low cost. However, only the stripmap mode has been discussed for SF MIMO‐SAR.
Jiajia Zhang, Guangcai Sun, Mengdao Xing, Zheng Bao, Fang Zhou, Mathini Sellathurai   +5 more
wiley   +1 more source

A Novel Sub-Image Local Area Minimum Entropy Reconstruction Method for HRWS SAR Adaptive Unambiguous Imaging

Remote Sensing, 2021
Multichannel high-resolution and wide-swath (HRWS) synthetic aperture radar (SAR) is a vital technique for modern remote sensing. As multichannel SAR systems usually face the problem of azimuth nonuniform sampling resulting in azimuth ambiguity, the ...
Liming Zhou, Xiaoling Zhang, Xu Zhan, Liming Pu, Tianwen Zhang, Jun Shi, Shunjun Wei   +6 more
doaj   +1 more source

Channel Phase Error Compensation for MIMO‐SAR

International Journal of Antennas and Propagation, Volume 2014, Issue 1, 2014., 2014
Multi‐input multioutput (MIMO) is a novel technique to achieve high‐resolution as well as wide swath in synthetic aperture radar (SAR) systems. Channel imbalance is inevitable in multichannel systems that it declines the imaging quality. Generally, the imbalance cannot be fully compensated by simple internal calibration in a MIMO‐SAR system.
Lei Zhang, Yunkai Deng, Robert Wang, Wen-Qin Wang   +3 more
wiley   +1 more source

A Novel Imaging Algorithm for High-Resolution Wide-Swath Space-Borne SAR Based on a Spatial-Variant Equivalent Squint Range Model

Remote Sensing, 2022
High-Resolution Wide-Swath (HRWS) is an important development direction of space-borne Synthetic Aperture Radar (SAR). The two-dimensional spatial variation of the Doppler parameters is the most significant characteristic of the sliding spotlight space ...
Yanan Guo, Pengbo Wang, Jie Chen, Zhirong Men, Lei Cui, Lei Zhuang   +5 more
doaj   +1 more source

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source

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