Results 21 to 30 of about 439 (181)
An improved adaptive sidelobe blanker [PDF]
, 2008 We propose a two-stage detector consisting of a subspace detector followed by the whitened adaptive beamformer orthogonal rejection test. The performance analysis shows that it possesses the constant false alarm rate property with respect to the unknown
Orlando, Danilo +5 more
core +1 more source
Maritime Over the Horizon Sensor Integration: HFSWR Data Fusion Algorithm
Remote Sensing, 2019 In order to provide a constant and complete operational picture of the maritime situation in the Exclusive Economic Zone (EEZ) at over the horizon (OTH) distances, a network of high frequency surface-wave-radars (HFSWR) slowly becomes a necessity.
Dejan Nikolic +6 more
doaj +1 more source
Array self-calibration for sky-wave over-the-horizon radar with gain-phase errors
The Journal of Engineering, 2019 This study proposes a novel algorithm for sky-wave over-the-horizon (OTH) radar array self-calibration with angle-independent gain-phase errors. The proposed method exploits backscattered echo from an ionised meteor trail, which can be considered as ...
Baiqiang Zhang, Junhao Xie
doaj +1 more source
Ionospheric decontamination for skywave OTH radar based on complex energy detector [PDF]
EURASIP Journal on Advances in Signal Processing, 2012 For over-the-horizon (OTH) radar, the ocean clutter is very strong. And this becomes a big challenge for the target detection. The clutter suppression is a very important procedure for the OTH radar. For the skywave OTH radar, the radar signal will propagate through the ionosphere. This will cause a contamination due to its unstable movement.
Wei You, Zishu He, Shuangling Wang
openaire +1 more source
Adaptive detection in nonhomogeneous environments using the generalized eigenrelation [PDF]
, 2007 This letter considers adaptive detection of a signal in a nonhomogeneous environment, more precisely under a covariance mismatch between the test vector and the training samples, due to an interference that is not accounted for by the training samples ...
Orlando, Danilo, Besson, Olivier
core +1 more source
Recovery Following Recurrent Fires Across Mediterranean Ecosystems. [PDF]
Glob Chang BiolMediterranean ecosystems worldwide are frequently affected by fires. Focusing on areas that burned two times over the past 22 years, we study the post‐fire dynamics, applying a statistical model to the time‐series of a remotely sensed proxy for vegetation cover.
Ermitão T +3 more
europepmc +2 more sources
Detection in the presence of surprise or undernulled interference [PDF]
, 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
Performance Analysis of a Sky-Wave Over-the Horizon Radar Simulation Tools
Revista ElektrónThis paper presents the main features of a skywave over-the-horizon radar simulation software and results on its ability to represent and detect different search scenarios.
Zenon Saavedra +4 more
doaj +1 more source
An ABORT-like detector with improved mismatched signals rejection capabilities [PDF]
, 2008 In this paper, we present a GLRT-based adaptive detection algorithm for extended targets with improved rejection capabilities of mismatched signals. We assume that a set of secondary data is available and that noise returns in primary and secondary data ...
Bandiera, Francesco +3 more
core +1 more source
A New Approach to OTH Main Parameters Determination [PDF]
Radioengineering, 2019 In this work, we propose a method based on a simulation that incorporates several models to provide the set of parameters needed on Over-The-Horizon radars (OTHR) performance evaluation, which consists in a versatile software tool.
Z. Saavedra +3 more
doaj