Results 31 to 40 of about 939 (214)

Detection in the presence of surprise or undernulled interference [PDF]

open access: yes, 2007
We consider the problem of detecting a signal of interest in the presence of colored noise, in the case of a covariance mismatch between the test cell and the training samples. More precisely, we consider a situation where an interfering signal (e.g., a
Besson, Olivier
core   +1 more source

Robust STAP With Reduced Mutual Coupling and Enhanced DOF Based on Super Nested Sampling Structure

open access: yesIEEE Access, 2019
In practical airborne radar, mutual coupling between array elements usually leads to space-time steering vector distortion for space-time adaptive processing (STAP), which seriously degrades radar performance.
Mingxin Liu, Xuegang Wang, Lin Zou
doaj   +1 more source

Adaptive detection of distributed targets in compound-Gaussian noise without secondary data: A Bayesian approach [PDF]

open access: yes, 2011
In this paper, we deal with the problem of adaptive detection of distributed targets embedded in colored noise modeled in terms of a compound-Gaussian process and without assuming that a set of secondary data is available.The covariance matrices of the ...
Bandiera, Francesco   +6 more
core   +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

A Robust STAP Method Based on Alternating Projection and Clutter Cancellation

open access: yesIEEE Access, 2019
Space-time steering vector mismatch of targets usually happens in the space-time adaptive processing (STAP) technique, causing space-time beam distortion. Due to the effects of clutter spectrum broadening and jamming, performance of the conventional STAP
Ningkang Chen, Ping Wei, Xiaoyu Ai
doaj   +1 more source

Deep Unfolding Based Space-Time Adaptive Processing Method for Airborne Radar

open access: yesLeida xuebao, 2022
The Sparse Recovery Space-Time Adaptive Processing (SR-STAP) method can use a small number of training range cells to effectively suppress the clutter of airborne radar.
Hangui ZHU   +4 more
doaj   +1 more source

Cognitive Space-time Adaptive Processing Technology for Airborne Radar in Complex Environments

open access: yesLeida xuebao
China has one of the longest land borders in the world and features a diverse range of terrain types and a dense electromagnetic environment. Therefore, in practical applications, airborne radar faces complex environments.
Wenchong XIE   +7 more
doaj   +1 more source

Delivery of Pleckstrin‐Homology Domains Suppresses PI3K/Akt Signaling and Breast Cancer Metastasis

open access: yesAdvanced Science, Volume 13, Issue 30, 28 May 2026.
Current therapies curb tumor growth but not metastasis. Obscurin, a giant metastasis suppressor lost in breast cancer, restrains PI3K/Akt signaling but is impractical to restore. We deploy a mini‐obscurin, comprising the obscurin‐PH‐domain, which sequesters PI3K‐p85, potently suppressing invasion and metastasis.
Matthew Eason   +12 more
wiley   +1 more source

Improved Dimension-Reduced Structures of 3D-STAP on Nonstationary Clutter Suppression for Space-Based Early Warning Radar

open access: yesRemote Sensing, 2022
By introducing degrees of freedom (DOFs) in elevation, the elevation-azimuth-Doppler three-dimensional space–time adaptive processing (3D-STAP) methods have better performance when suppressing the nonstationary clutter caused by the Earth’s rotation in ...
Zhihao Wang   +4 more
doaj   +1 more source

Sea Clutter Suppression for Shipborne DRM-Based Passive Radar via Carrier Domain STAP

open access: yesRemote Sensing
This paper proposes a new carrier domain approach to suppress spreading first-order sea clutter in shipborne passive radar systems using Digital Radio Mondiale (DRM) signals as illuminators.
Yijia Guo   +3 more
doaj   +1 more source

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