Results 51 to 60 of about 3,090,321 (210)
An Adaptive Hierarchical Detection Method for Ship Targets in High-Resolution SAR Images
Remote Sensing, 2020 With the improvement of image resolution in synthetic aperture radars (SARs), sea clutter characteristics become more complex, which poses new challenges to traditional ship target detection missions.
Yi Liang +4 more
doaj +1 more source
Recovery of Graph Signals from Sign Measurements [PDF]
arXiv, 2021 Sampling and interpolation have been extensively studied, in order to reconstruct or estimate the entire graph signal from the signal values on a subset of vertexes, of which most achievements are about continuous signals. While in a lot of signal processing tasks, signals are not fully observed, and only the signs of signals are available, for example
arxiv
Towards bandwidth estimation for graph signal reconstruction [PDF]
arXiv, 2023 In numerous graph signal processing applications, data is often missing for a variety of reasons, and predicting the missing data is essential. In this paper, we consider data on graphs modeled as bandlimited graph signals. Predicting or reconstructing the unknown signal values for such a model requires an estimate of the signal bandwidth.
arxiv
A SIFT Algorithm for Bistatic SAR Imaging in Spaceborne Constant-offset Configuration (in English)
Leida xuebao, 2013 Focusing on the problem of the space-variance of the range cell migration term for bistatic Synthetic Aperture Radar (SAR), a Scaled Inverse Fourier Transform (SIFT) based imaging algorithm for constant-offset configuration bistatic SAR data processing ...
Chen Shi-chao +3 more
doaj +1 more source
3D Fully Polarimetric Attributed Scattering Center Extraction Based on Sequential 2D SAR Images
IEEE Access, 2019 Compared with the two-dimensional (2D) attributed scattering center model (ASCM), three dimensional (3D) fully polarimetric attributed scattering center model (FP-ASCM) is able to directly offer the target location, size, and orientation in 3D space ...
Yue Zhao +4 more
doaj +1 more source
IET Radar, Sonar & Navigation, 2021 Airborne multiple‐input multiple‐output (MIMO) radar can transmit orthogonal waveforms to increase the range of the detection target. However, in a multipath environment, airborne MIMO radar also has energy radiated to the target through multipath ...
Yili Hu +3 more
doaj +1 more source
MIMO-Based Forward-Looking SAR Imaging Algorithm and Simulation
International Journal of Antennas and Propagation, 2014 Multiple-input multiple-output (MIMO) radar imaging can provide higher resolution and better sensitivity and thus can be applied to targets detection, recognition, and tracking.
Ziqiang Meng +5 more
doaj +1 more source
The Journal of Engineering, 2019 Here, the authors propose a robust adaptive beamforming method based on desired signal steering vector estimation and interference-plus-noise covariance matrix reconstruction, so as to attenuate the influences of the desired signal steering vector ...
Junsheng Huang, Hongtao Su, Yang Yang
doaj +1 more source
Acta Acustica, 2020 An accurate knowledge of the sound field distribution inside a room is required to identify and optimally locate corrective measures for room acoustics.
Pham Vu Thach, Lissek Hervé
doaj +1 more source
A clutter suppression algorithm via subspace‐weighted mixed‐norm minimisation
IET Radar, Sonar & Navigation, 2023 Space‐time adaptive processing (STAP) struggles to effectively suppress clutter in the heterogeneous clutter environment due to the lack of training samples.
Degen Wang +3 more
doaj +1 more source