Results 41 to 50 of about 83,251 (291)

A nonquadratic regularization-based technique for joint SAR imaging and model error correction [PDF]

, 2008
Regularization based image reconstruction algorithms have successfully been applied to the synthetic aperture radar (SAR) imaging problem. Such algorithms assume that the mathematical model of the imaging system is perfectly known.
Cetin, Mujdat, Onhon, Ozben Naime, Çetin, Müjdat, Önhon, Özben Naime   +3 more
core   +1 more source

Autonomous Navigation Airborne Forward-Looking SAR High Precision Imaging with Combination of Pseudo-Polar Formatting and Overlapped Sub-Aperture Algorithm

Remote Sensing, 2013
Autonomous navigation airborne forward-looking synthetic aperture radar (SAR) observes the anterior inferior wide area with a short cross-track dimensional linear array as azimuth aperture.
Xueming Peng, Yanping Wang, Wen Hong, Weixian Tan, Yirong Wu   +4 more
doaj   +1 more source

Inverse synthetic aperture radar imaging using complex-value deep neural network

The Journal of Engineering, 2019
As compared with traditional ISAR imaging methods, the compressive sensing (CS)-based imaging methods can obtain high-quality images using much less under-sampled data.
ChangYu Hu, Ling Wang, Ze Li, Lingling Sun, Otmar Loffeld   +4 more
doaj   +1 more source

A bistatic inverse synthetic aperture radar sparse aperture high‐resolution imaging algorithm with migration compensation

IET Radar, Sonar & Navigation, 2022
In recent years, bistatic inverse synthetic aperture radar (Bi‐ISAR) imaging of targets with sparse aperture has attracted more and more attention. One of the critical issues is that the Bi‐ISAR imaging of some large targets with rotational motions is ...
Hanshen Zhu, Wenhua Hu, Baofeng Guo, Xiaoxiu Zhu, Bin Zhou, Dongfang Xue, Chang'an Zhu   +6 more
doaj   +1 more source

Proposed satellite position determination systems and techniques for Geostationary Synthetic Aperture Radar [PDF]

, 2016
This paper proposes two different calibration techniques for Geostationary Synthetic Aperture Radar (GEOSAR) missions requiring a high precision positioning, based on Active Radar Calibrators and Ground Based Interferometry.
Broquetas Ibars, Antoni, Casado Blanco, David, Fernández Usón, Marc, Martin Fuster, Roger   +3 more
core   +2 more sources

Micro-Doppler Signal Time-Frequency Algorithm Based on STFRFT

Sensors, 2016
This paper proposes a time-frequency algorithm based on short-time fractional order Fourier transformation (STFRFT) for identification of a complicated movement targets. This algorithm, consisting of a STFRFT order-changing and quick selection method, is
Cunsuo Pang, Yan Han, Huiling Hou, Shengheng Liu, Nan Zhang   +4 more
doaj   +1 more source

Precise motion compensation method in terahertz ISAR imaging based on sharpness maximization

Electronics Letters, 2022
According to the characteristics of the manoeuvring targets and the superiorities of Terahertz Inverse Synthetic Aperture Radar (THz‐ISAR), a precise motion compensation method based on image sharpness maximization for manoeuvring targets in the ...
Hetong Wang, Qi Yang, Hongqiang Wang, Bin Deng   +3 more
doaj   +1 more source

Sparse representation-based synthetic aperture radar imaging [PDF]

, 2011
There is increasing interest in using synthetic aperture radar (SAR) images in automated target recognition and decision-making tasks. The success of such tasks depends on how well the reconstructed SAR images exhibit certain features of the underlying ...
Cetin, Mujdat, Masnadi-Shirazi, Mohammad Ali, Samadi, Sadegh, Çetin, Müjdat   +3 more
core   +1 more source

SA-ISAR imaging algorithm based on the gradient signal recovery method

The Journal of Engineering, 2019
As the radar system tends to be complex, obtaining well-focused images with discontinued apertures becomes a challenge. Here, a new sparse aperture inverse synthetic aperture radar (SA-ISAR) imaging approach through the signal recovery method is proposed.
Bingren Ji, Bin Zhao, Yong Wang, Rongqing Xu   +3 more
doaj   +1 more source

Accelerated translational motion compensation with contrast maximisation optimisation algorithm for inverse synthetic aperture radar imaging

IET radar, sonar & navigation, 2019
Range alignment of traditional translational motion compensation for inverse synthetic aperture radar imaging generally cannot be implemented accurately under low signal-to-noise ratio, resulting in the following phase adjustment invalid.
Shuai Shao, Lei Zhang, Hongwei Liu, Zhou Yejian   +3 more
semanticscholar   +1 more source