Results 21 to 30 of about 20,153,829 (205)

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

The adaptive coherence estimator is the generalized likelihood ratio test for a class of heterogeneous environments [PDF]

open access: yes, 2008
The adaptive coherence estimator (ACE) is known to be the generalized likelihood ratio test (GLRT) in partially homogeneous environments, i.e., when the covariance matrix Ms of the secondary data is proportional to the covariance matrix Mp of the vector ...
Bidon, Stéphanie   +2 more
core   +1 more source

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

Unified Theoretical Frame of a Joint Transmitter-Receiver Reduced Dimensional STAP Method for an Airborne MIMO Radar

open access: yesLeida xuebao, 2016
The unified theoretical frame of a joint transmitter-receiver reduced dimensional Space-Time Adaptive Processing (STAP) method is studied for an airborne Multiple-Input Multiple-Output (MIMO) radar.
Guo Yiduo   +3 more
doaj   +1 more source

Knowledge-aided bayesian detection in heterogeneous environments [PDF]

open access: yes, 2007
We address the problem of detecting a signal of interest in the presence of noise with unknown covariance matrix, using a set of training samples. We consider a situation where the environment is not homogeneous, i.e., when the covariance matrices of the
Bidon, Stéphanie   +7 more
core   +1 more source

Sparse Representation Based Algorithm for Airborne Radar in Beam-Space Post-Doppler Reduced-Dimension Space-Time Adaptive Processing

open access: yesIEEE Access, 2017
An efficient and training-sample-reducing space-time adaptive processing (STAP) algorithm based on sparse representation for ground clutter suppression in airborne radar is proposed in this paper. First of all, the principle and problems of sample matrix
Yiduo Guo, Guisheng Liao, Weike Feng
doaj   +1 more source

Space-time Adaptive FIR Filtering with Staggered PRI

open access: yes, 2022
Space-time adaptive processing (STAP) has been recognized as an indispensable tool for detection of moving targets by air- or space borne MIT radar.
Klemm, R.
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

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

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