Results 51 to 60 of about 619,289 (184)
Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.Abstract The lunar south pole features permanently shadowed regions (PSRs) that never receive direct sunlight. These regions maintain cold temperatures that potentially trap and accumulate volatiles over geologic timescales. Within NASA's Artemis candidate landing regions, we identified 130 candidate landing sites (CLSs) that satisfy the Human Landing ...
Lukas Wueller +10 more
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Conservation Letters, Volume 19, Issue 2, March/April 2026.ABSTRACT Insects are the most diverse and functionally important animals on Earth. In at least some regions, terrestrial populations are declining. Despite this, insects are often overlooked in conservation policy, and it is difficult to assess how anthropogenic threats and conservation actions affect insect populations.
Andrew J. Bladon +59 more
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Naval LPI radars: ways to detect their operation
Transactions of the Krylov State Research Centre, 2022 Object and purpose of research. This paper presents analytical estimates for emission characteristics of foreign low-probability-of-intercept (LPI) radars. It also gives a quantitative assessment to the possibility of detecting the operation of these radars by standard naval EW tools. Subject matter and methods.
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Water Resources Research, Volume 62, Issue 2, February 2026.Abstract Affordable autonomous soil sensors and IoT technology enable real‐time soil moisture monitoring, which offers opportunities for real‐time model calibration and irrigation optimization. We introduce an irrigation decision support system SWIM2 (Sensor Wielded Inverse Modeling of a Soil Water Irrigation Model), a digital twin that integrates ...
Marit G. A. Hendrickx +7 more
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Design and Processing of a Novel Chaos-Based Stepped Frequency Synthesized Wideband Radar Signal
Sensors, 2018 The linear stepped frequency and linear frequency shift keying (FSK) signal has been widely used in radar systems. However, such linear modulation signals suffer from the range–Doppler coupling that degrades radar multi-target resolution.
Tao Zeng +3 more
doaj +1 more source
IET Communications, Volume 20, Issue 1, January/December 2026.This paper introduces a novel AMR method named IUDR‐Net to address the challenge of poor recognition accuracy under low SNR conditions. The method first employs the improved U‐Lite network to suppress the impact of noise effectively and then adopts the ResNet18‐1D network to perform the AMR task efficiently.
Haikun Fang +4 more
wiley +1 more source
Technique for target detection and rangingbased on broadband LPI radars
Electronics Letters, 2001 A processing technique for improving the ranging and detection capabilities of LPI radars and the measured performance of an experimental system are presented. The precision of the measured distance is very high even under low SNR conditions. The associated detection algorithm also exhibits good performance in noisy environments.
Pérez Martínez, Félix +2 more
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Densely-Accumulated Convolutional Network for Accurate LPI Radar Waveform Recognition
2021 IEEE Global Communications Conference (GLOBECOM), 2021 Abstract This paper presents a deep learning-based method to automatically recognize low probability of intercept (LPI) radar waveforms against diversified jamming attacks. Concretely, an efficient convolutional neural network (CNN) architecture, namely Densely-Accumulated Network (DANet), is introduced to learn the time-frequency representation ...
Thien Huynh-The +6 more
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A Method for Open‐Set Recognition of LPI Radar Signal Modulation Based on MGPL
IET Communications, Volume 20, Issue 1, January/December 2026.This paper introduces the multiple Gaussian prototypes learning (MGPL) method to address the automatic modulation open set recognition (AMOSR) problem for Low Probability of Intercept (LPI) radar signals. The method assigns multiple Gaussian prototypes to each known class and achieves effective representation in the latent feature space through the ...
Haikun Fang +4 more
wiley +1 more source
Modeling and Analysis of LPI Radar Signal
IOSR Journal of Electronics and Communication Engineering, 2013 Radar Emitter Signal recognition is one of the key procedures of signal processing in Electronic Warfare (EW) Receiver. As there is an intense growth in the activities of modern Electronic Warfare, advanced radars are increasing and becoming main component of radars gradually. These modern radars called Low Probability of Intercept (LPI), use different
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