Results 51 to 60 of about 22,571 (199)
Direct Data Domain Sparsity-Based STAP Utilizing Subaperture Smoothing Techniques
International Journal of Antennas and Propagation, 2015 We propose a novel direct data domain (D3) sparsity-based space-time adaptive processing (STAP) algorithm utilizing subaperture smoothing techniques for airborne radar applications.
Zhaocheng Yang +4 more
doaj +1 more source
Clutter Suppression Approach for End-Fire Array Airborne Radar Based on Adaptive Segmentation
IEEE Access, 2019 End-fire array antenna is a kind of special radar antenna with beam pointing perpendicular to the normal direction of the array. Because of its low profile and directional radiation characteristics, it is especially suitable for blind zone compensation ...
Yongwei Li +3 more
doaj +1 more source
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.We propose a three‐element non‐uniform linear array (NULA) design strategy for OFDM‐based radar on a moving platform, optimizing multi‐channel DPCA processing with the T‐DPCA‐RF filter. Unlike heuristic approaches, our method constrains the DPCA filter response to avoid blind velocity effects within a target velocity range.
Andrea Quirini +2 more
wiley +1 more source
IEEE Access, 2018 In space–time adaptive processing (STAP) technique, the estimation of the interference-plus-noise covariance matrix is one of the critical points.
Yu Zhao +4 more
doaj +1 more source
European Journal of Sport Science, Volume 24, Issue 12, Page 1788-1797, December 2024.Abstract The objectives of the study were (i) to evaluate the effects of whole‐body cryostimulation (WBC) after training as an effective tool to improve sleep and recovery and (ii) to determine which exposure schedule for WBC (immediately after training vs. 1h before bedtime) is the most appropriate to improve sleep and recovery.
Coralie Arc‐Chagnaud +6 more
wiley +1 more source
Leida xuebao, 2017 Used to suppress strong clutter and jamming in airborne radar data, Space Time Adaptive Processing (STAP) is a multidimensional adaptive filtering technique that simultaneously combines signals from elements of an antenna array and multiple pulses of ...
Xie Wenchong +2 more
doaj +1 more source
Cover and hitting times of hyperbolic random graphs
Random Structures &Algorithms, Volume 65, Issue 4, Page 915-978, December 2024.Abstract We study random walks on the giant component of Hyperbolic Random Graphs (HRGs), in the regime when the degree distribution obeys a power law with exponent in the range (2,3)$$ \left(2,3\right) $$. In particular, we first focus on the expected time for a random walk to hit a given vertex or visit, that is, cover, all vertices.
Marcos Kiwi +2 more
wiley +1 more source
Orbital (Hydro)Climate Variability in the Ice‐Free Early Eocene Arctic
Paleoceanography and Paleoclimatology, Volume 39, Issue 12, December 2024.Abstract Early Eocene (∼56–48 Ma) climates are useful to investigate polar climate dynamics in the absence of ice. We explore early Eocene orbital variability of Arctic climate using sediments recovered by the Arctic Coring Expedition (ACEX). High resolution records of lipid biomarkers (GDGTs; 2‐kyr) and palynological assemblages (5‐kyr) in the ∼4 m ...
Chris D. Fokkema +3 more
wiley +1 more source
EURASIP Journal on Advances in Signal Processing, 2018 Traditional space-time adaptive processing (STAP) usually needs many independent and identically distributed (i.i.d) training datasets for estimating clutter covariance matrix (CCM).
Wei Wang +3 more
doaj +1 more source
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2681-2697, December 2024.SAR GMTI is of great importance for both civlisation and military applications. The clutter suppression performance is an important assurance for the accuracy and precision of GMTI. To achieve better clutter suppression performance, it often requires extremely precise registration of multi‐channel data, including polarization and interferometric ...
Jing Xu +3 more
wiley +1 more source