Results 51 to 60 of about 1,412 (212)

Analysis of low probability of intercept (LPI) radar signals using the Wigner Distribution [PDF]

, 2004
The parameters of Low Probability of Intercept (LPI) radar signals are hard to identify by using traditional periodogram signal processing techniques. Using the Wigner Distribution (WD), this thesis examines eight types of LPI radar signals.
Gau, Jen-Yu
core  

Adaptive Detection Algorithm With Dynamic Dual-Threshold for Low Probability of Intercept Radar Signals and Its FPGA Implementation

IEEE Access
This paper presents an adaptive signal detection algorithm with dynamic dual-threshold for low probability of intercept (LPI) radar signals in complex electromagnetic environments.
Xiaoji Wei, Bilu Luo, Chunfang Gao
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Analysis of low probability of intercept (LPI) radar signals using cyclostationary processing [PDF]

, 2002
LPI radar is a class of radar systems possessing certain performance characteristics that make them nearly undetectable by today's digital intercept receivers. This presents a significant tactical problem in the battle space.
Lima, Antonio F.
core  

Examining the Role of Economic Complexity and Climate Readiness in the Climate‐Fishing Nexus

Sustainable Development, EarlyView.
ABSTRACT This paper investigates the climate‐fisheries association in Gulf Cooperation Council (GCC) nations from 1999 to 2022. A key objective is to explore the role of both the economic complexity index (ECI) and the climate readiness factor (READ) in the climate‐fishing nexus.
Mohamed Sami Ben Ali, Alanoud Al‐Maadid, Hicham Ayad   +2 more
wiley   +1 more source

Radar Selection Method Based on an Improved Information Filter in the LPI Radar Network

International Journal of Antennas and Propagation, 2018
In order to save the radar resources and obtain the better low probability intercept ability in the network, a novel radar selection method for target tracking based on improved interacting multiple model information filtering (IMM-IF) is presented ...
Zhenkai Zhang, Bing Zhang, Zhibin Xie, Yi Yang   +3 more
doaj   +1 more source

Antenna Array Beamforming for Low Probability of Intercept Radars [PDF]

, 2013
A radar system's focus on low probability of intercept (LPI) performance has become increasingly important as systems designed for electronic support measures (ESM) and electronic counter measures (ECM) continue to become more prevalent.
Goad, Daniel
core  

LPI Radar Waveform Recognition Based on Multi-Resolution Deep Feature Fusion

IEEE Access, 2021
Deep neural networks are used as effective methods for the Low Probability of Intercept (LPI) radar waveform recognition. However, existing models' performance degrades seriously at low Signal-to-Noise Ratios (SNRs) because the effective features ...
Xue Ni, Huali Wang, Fan Meng, Jing Hu, Changkai Tong   +4 more
doaj   +1 more source

Eosinophilic Oesophagitis Beyond the Oesophagus: High Prevalence of Chronic Rhinosinusitis‐Type Symptoms and Their Impact on Symptom Severity in Swiss EoE Cohort Study Patients

Alimentary Pharmacology &Therapeutics, EarlyView.
Among 211 prospectively followed Swiss patients with eosinophilic oesophagitis, chronic rhinosinusitis was two‐ to three‐fold more common than in the general population. It was associated with greater oesophageal symptom severity and, in a quarter of cases, was experienced by patients as more debilitating than the underlying oesophageal disease ...
Gebhardt Aidan, Kreienbühl Andrea, Greuter Thomas, Schlag Christoph, Nennstiel Simon, Saner Catherine, Rossel Jean‐Benoit, Mauthe Tina, M. Meerwein Christian, Schoepfer Alain, B. Soyka Michael, Straumann Alex, Biedermann Luc, on behalf of the Swiss EoE Cohort Study Group, Patrick Aepli, Luc Biedermann, Ruggero Biral, Carine Blanchard, Simon Buetikofer, Emanuel Burri, Joachim Diebold, Carolien Dietrich, Annett Franke, Michèle Gwerder, Thomas Greuter, Chantal Hasler, Wolfram Jochum, Tanay Kaymak, Andrea Kreienbühl, Katline Metzger‐Peter, Fritz Murray, Simon Nennstiel, Peter Netzer, Jan Hendrik Niess, Gabrielle Reichhart, Cristiana Quattropani, Elodie Ristorcelli, Jean‐Benoit Rossel, Ekaterina Safroneeva, Catherine Saner, Alain Schoepfer, Philip Schreiner, Christine Sempoux, Dagmar Simon, Hans‐Uwe Simon, Alex Straumann, Sven Trelle, Achim Weber, Niels Willi, Elina Wuethrich, Marcel Zwahlen, Michael Scharl, Marcin Wawrzyniak   +52 more
wiley   +1 more source

Radar sensor using low probability of interception SS-FH signals

IEEE Aerospace and Electronic Systems Magazine, 2000
One of the best known weakness of radar sensors in defense and security applications is the necessity to radiate a signal, which can be detected by the target, so being possible (easy in fact) that the target is alerted about the presence of a radar before the radar is alerted about the presence of a target.
Burgos García, Mateo, Sanmartin Jara, Juan, Pérez Martínez, Félix, Retamosa, Juan   +3 more
openaire   +2 more sources