Results 31 to 40 of about 4,896 (201)

Bistatic MIMO Radar Clutter Suppression by Exploiting the Transmit Angle

open access: yesLeida xuebao, 2014
The transmit angle of bistatic radars can be obtained by introducing Multiple-Input Multiple-Output (MIMO) radar techniques. The Three-Dimensional (3D) clutter spectra, that is, the transmit angle, receive angle, and Doppler frequency, are introduced ...
Li Jun   +3 more
doaj   +1 more source

Suppression of Jammer Multipath in GNSS Antenna Array Receiver

open access: yesRemote Sensing, 2022
Interference multipath is an important factor to affect the anti-jamming performance for the global navigation satellite system (GNSS) antenna array receiver. However, interference multipath must be considered in practical application. In this paper, the
Long Huang   +5 more
doaj   +1 more source

Generalized robust shrinkage estimator and its application to STAP detection problem [PDF]

open access: yes, 2014
Recently, in the context of covariance matrix estimation, in order to improve as well as to regularize the performance of the Tyler's estimator [1] also called the Fixed-Point Estimator (FPE) [2], a "shrinkage" fixed-point estimator has been introduced ...
Chitour, Yacine   +2 more
core   +3 more sources

Beamforming issues in modern MIMO Radars with Doppler [PDF]

open access: yes, 2006
In traditional beamforming radar systems, the transmitting antennas send coherent waveforms which form a highly focused beam. In the MIMO radar system, the transmitter sends noncoherent (possibly orthogonal) broad (possibly omni-directional) waveforms ...
Chen, Chun-Yang, Vaidyanathan, P. P.
core   +1 more source

Anti-jamming techniques for multichannel SAR imaging [PDF]

open access: yes, 2006
© The Institution of Engineering and Technology 2006 IEE Proceedings online no. 20045090An airborne broadband jammer present in the mainbeam of a synthetic aperture radar (SAR) can potentially destroy a large region of the SAR image. In addition to this,
Cheremisin   +9 more
core   +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

Reduced Degrees of Freedom in Space-Time Adaptive Processing for Space-based Early Warning Radar

open access: yesLeida xuebao, 2022
The clutter of space-based early warning radar exhibits tight coupling in the azimuth-elevation-Doppler domain due to the high speed of satellites and the Earth’s rotation.
Keqing DUAN   +4 more
doaj   +1 more source

Different homogeneity detectors for improving space-time adaptive radar performance in heterogeneous clutter [PDF]

open access: yes, 2006
© Copyright 2006 IEEESecondary data selection for estimation of the clutter covariance matrix in space-time adaptive processing (STAP) is normally obtained from cells (range rings) in close proximity of the cell under test.
Bertacca, M., Gray, D., Rosenberg, L.
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

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

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