Results 21 to 30 of about 1,464,347 (286)

Optimal Search Strategy of Low-Altitude Target for Airborne Phased Array Radar Using Digital Elevation Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The search for low-altitude targets becomes a more challenging task for airborne phased array radar, due to the limited system resources and serious ground clutter.
Jiawei Luo   +6 more
doaj   +1 more source

Detection of image structures using the Fisher information and the Rao metric [PDF]

open access: yes, 2004
In many detection problems, the structures to be detected are parameterized by the points of a parameter space. If the conditional probability density function for the measurements is known, then detection can be achieved by sampling the parameter space ...
Maybank, Stephen J.
core   +2 more sources

Assessing respiratory pathogen communities in bighorn sheep populations: Sampling realities, challenges, and improvements. [PDF]

open access: yesPLoS ONE, 2017
Respiratory disease has been a persistent problem for the recovery of bighorn sheep (Ovis canadensis), but has uncertain etiology. The disease has been attributed to several bacterial pathogens including Mycoplasma ovipneumoniae and Pasteurellaceae ...
Carson J Butler   +11 more
doaj   +1 more source

Low False Alarm and Narrow-Wide Band Compatible Signal Detection Algorithm Combining the Multiscale Wavelet Transform Extremum Detection With the Spectrum Energy Detection

open access: yesIEEE Access, 2023
A low false alarm and narrow-wide band compatible signal detection algorithm is proposed by combining the multiscale wavelet transform extremum detection with the spectrum energy detection. The signals with different bandwidths are detected at respective
Weiying Huang, Ren Wang
doaj   +1 more source

A Novel Frequency-Hopping Sequence for Covert Communication

open access: yesIEEE Access, 2017
In this paper, a novel frequency-hopping sequence with lower probability of detection is proposed for covert communication systems. By formulating and solving a constrained optimization problem, a probability vector aiming for covert communication is ...
Ben Ning, Lei Guan, Haiyan Huang
doaj   +1 more source

Reduced Memory Region Based Deep Convolutional Neural Network Detection [PDF]

open access: yes, 2016
Accurate pedestrian detection has a primary role in automotive safety: for example, by issuing warnings to the driver or acting actively on car's brakes, it helps decreasing the probability of injuries and human fatalities.
Baroffio, Luca   +5 more
core   +2 more sources

Expanding Low-Density Latent Regions for Open-Set Object Detection [PDF]

open access: yesComputer Vision and Pattern Recognition, 2022
Modern object detectors have achieved impressive progress under the close-set setup. However, open-set object detection (OSOD) remains challenging since objects of unknown categories are often misclassified to existing known classes.
Jiaming Han   +5 more
semanticscholar   +1 more source

Cooperative Anti-jamming Method of Data Link Based on Adaptive Threshold [PDF]

open access: yesJisuanji gongcheng, 2018
In order to enhance the anti-jamming capability of data link in low Signal to Noise Ratio(SNR) environment,this paper improves the energy detection method based on invariable threshold and proposes an adaptive threshold anti-jamming method based on ...
YANG Mu,CHEN Changxing,LING Yunfei,LIN Xing,WANG Xiaodong
doaj   +1 more source

Homodyne-like detection for state-discrimination in the presence of phase noise [PDF]

open access: yes, 2016
We propose an innovative strategy to discriminate between two coherent states affected by either uniform or gaussian phase noise. The strategy is based on a homodyne-like detection scheme with photon-number-resolving detectors in the regime of low ...
Allevi, Alessia   +3 more
core   +2 more sources

Efficient Radar-Target Assignment in Low Probability of Intercept Radar Networks: A Machine-Learning Approach

open access: yesIEEE Open Journal of the Communications Society, 2023
To achieve low probability of intercept (LPI) in radar networks for multiple target detection, it is necessary to find the optimal assignment of distributed radars to targets.
Hamid Amiriara   +2 more
semanticscholar   +1 more source

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