Results 31 to 40 of about 1,288,009 (328)

Robust Space-Time Adaptive Processing Method for GNSS Receivers in Coherent Signal Environments

open access: yesRemote Sensing, 2023
In the coherent signal environments caused by multipath propagation, the interference suppression performance of the global navigation satellite systems (GNSS) receivers decreases sharply.
Zhen Meng, Feng Shen
doaj   +1 more source

Training sample selection for space–time adaptive processing based on multi-frames

open access: yesThe Journal of Engineering, 2019
As training samples are not identically distributed with cell under test (CUT) in heterogeneous environments, the performance of space–time adaptive processing (STAP) to suppress clutter degrades. To improve the performance of STAP, this study proposes a
Chenxiao Zhang   +3 more
doaj   +1 more source

Robust Constrained Inverse Beamforming Algorithm Based on Space Time Adaptive Processing

open access: yesIEEE Access, 2019
The power of Beidou satellite signals is very low, so it is vulnerable to interfering sources and in the presence of jamming. Therefore, a robust constrained inverse beamforming algorithm based on space-time adaptive processing is proposed, which can not
Yanping Liao   +3 more
doaj   +1 more source

A Space-Time Adaptive Processing Method Based on Sparse Reconstruction of Reverberation Interference

open access: yesXibei Gongye Daxue Xuebao, 2020
Aiming at the problem of how to obtain reverberation samples and estimate their covariance matrix in the space-time adaptive processing(STAP) of sonar system, a new space-time adaptive processing method is proposed based on sparse reconstruction of ...

doaj   +1 more source

Knowledge-Aided STAP Using Low Rank and Geometry Properties [PDF]

open access: yes, 2013
This paper presents knowledge-aided space-time adaptive processing (KA-STAP) algorithms that exploit the low-rank dominant clutter and the array geometry properties (LRGP) for airborne radar applications.
de Lamare, Rodrigo C.   +3 more
core   +2 more sources

A constrained-based optimization approach for seismic data recovery problems [PDF]

open access: yes, 2014
Random and structured noise both affect seismic data, hiding the reflections of interest (primaries) that carry meaningful geophysical interpretation. When the structured noise is composed of multiple reflections, its adaptive cancellation is obtained ...
Chaux, Caroline   +3 more
core   +5 more sources

IMPROVE THE SAFETY OF AIR TRANSPORT, ESPECIALLY IN MILITARIZED TERRAIN, BY USE OF SIDE LOOKING AIRBORNE RADAR AND SPACE TIME ADAPTIVE PROCESSING [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport
The paper explores the potential to enhance aviation safety, particularly in militarized regions, by outfitting aircraft with Side Looking Airborne Radar (SLAR) and employing space-time adaptive processing (STAP) algorithms.
Błażej ŚLESICKI   +2 more
doaj   +1 more source

Partially Adaptive STAP Algorithm Approaches to Functional MRI [PDF]

open access: yes, 2009
In this work, the architectures of three partially adaptive STAP algorithms are introduced, one of which is explored in detail, that reduce dimensionality and improve tractability over fully adaptive STAP when used in construction of brain activation ...
Holland, S. K.   +4 more
core   +2 more sources

Extension of Wirtinger's Calculus to Reproducing Kernel Hilbert Spaces and the Complex Kernel LMS [PDF]

open access: yes, 2010
Over the last decade, kernel methods for nonlinear processing have successfully been used in the machine learning community. The primary mathematical tool employed in these methods is the notion of the Reproducing Kernel Hilbert Space.
Bouboulis, Pantelis   +1 more
core   +1 more source

Three-dimensional sparse recovery space-time adaptive processing for airborne radar

open access: yesThe Journal of Engineering, 2019
Conventional 3-dimensional (3D) space-time adaptive processing (STAP) has achieved good performance for non-stationary clutter suppression. However, the performance of 3D STAP rapidly degrades when applied to heterogeneous clutter environment due to the ...
Keqing Duan   +4 more
doaj   +1 more source

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