Results 11 to 20 of about 405,051 (265)

Adaptive Detection of Direct-Sequence Spread-Spectrum Signals Based on Knowledge-Enhanced Compressive Measurements and Artificial Neural Networks [PDF]

open access: yesSensors, 2021
The direct-sequence spread-spectrum (DSSS) technique has been widely used in wireless secure communications. In this technique, the baseband signal is spread over a wider bandwidth using pseudo-random sequences to avoid interference or interception.
Shuang Zhang   +3 more
doaj   +2 more sources

An Adaptive Ship Detection Scheme for Spaceborne SAR Imagery

open access: yesSensors, 2016
With the rapid development of spaceborne synthetic aperture radar (SAR) and the increasing need of ship detection, research on adaptive ship detection in spaceborne SAR imagery is of great importance.
Xiangguang Leng   +4 more
doaj   +3 more sources

Detection of CRISPR adaptation [PDF]

open access: yesBiochemical Society Transactions, 2020
Prokaryotic adaptive immunity is built when short DNA fragments called spacers are acquired into CRISPR (clustered regularly interspaced short palindromic repeats) arrays. CRISPR adaptation is a multistep process which comprises selection, generation, and incorporation of prespacers into arrays.
Anna Shiriaeva   +3 more
openaire   +2 more sources

Adaptive Robust Radar Target Detector Based on Gradient Test

open access: yesRemote Sensing, 2022
The exact knowledge of the signal steering vector is not always known, which may result in detection performance degradation when a signal mismatch occurs.
Zeyu Wang   +3 more
doaj   +1 more source

Multi-rank Range-spread Target Detection Method for Space/Time Symmetric Array Radar under Non-Gaussian Clutter Background

open access: yesLeida xuebao, 2022
This study proposes a multi-rank range-spread target detection method for multi-channel array radar under a non-Gaussian clutter background. The method aims to detect the target from real clutter using the multi-channel array radar.
Yongchan GAO   +3 more
doaj   +1 more source

Adaptive Concept Drift Detection [PDF]

open access: yesProceedings of the 2009 SIAM International Conference on Data Mining, 2009
AbstractAn established method to detect concept drift in data streams is to perform statistical hypothesis testing on the multivariate data in the stream. The statistical theory offers rank‐based statistics for this task. However, these statistics depend on a fixed set of characteristics of the underlying distribution. Thus, they work well whenever the
Dries, Anton, Rückert, Ulrich
openaire   +3 more sources

Detection of Correlations With Adaptive Sensing [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
The problem of detecting correlations from samples of a high-dimensional Gaussian vector has recently received a lot of attention. In most existing work, detection procedures are provided with a full sample. However, following common wisdom in experimental design, the experimenter may have the capacity to make targeted measurements in an on-line and ...
Castro, Rui   +2 more
openaire   +4 more sources

Adaptive Windows for Duplicate Detection [PDF]

open access: yes2012 IEEE 28th International Conference on Data Engineering, 2012
Duplicate detection is the task of identifying all groups of records within a data set that represent the same real-world entity, respectively. This task is difficult, because (i) representations might differ slightly, so some similarity measure must be defined to compare pairs of records and (ii) data sets might have a high volume making a pair-wise ...
Uwe Draisbach   +3 more
openaire   +2 more sources

Detecting and Adapting to Novelty in Games

open access: yesCoRR, 2021
10 pages, 5 figures, Accepted to the AAAI21 Workshop on on Reinforcement Learning in ...
Xiangyu Peng   +2 more
openaire   +2 more sources

Subspace gradient tests for range‐spread target detection in structured interference plus Gaussian clutter

open access: yesIET Radar, Sonar & Navigation, 2023
This study considers the problem of detecting range‐spread targets embedded in subspace interference plus Gaussian clutter with an unknown covariance matrix.
Tao Jian   +5 more
doaj   +1 more source

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