Results 41 to 50 of about 4,347 (213)

Optimal Power Allocation Strategy in a Joint Bistatic Radar and Communication System Based on Low Probability of Intercept

Sensors, 2017
In this paper, we investigate a low probability of intercept (LPI)-based optimal power allocation strategy for a joint bistatic radar and communication system, which is composed of a dedicated transmitter, a radar receiver, and a communication receiver ...
Chenguang Shi, Fei Wang, Sana Salous, Jianjiang Zhou   +3 more
doaj   +1 more source

A fast Wigner Hough transform algorithm for parameter estimation of low probability of intercept radar polyphase coded signals

IET Signal Processing, 2023
It is difficult for a receiver to intercept the signals from a radar system that can emit low probability of intercept (LPI) polyphase coded signals. The traditional Wigner Hough transform (WHT) algorithm requires a large amount of computation and takes ...
Jincheng Yang, Shiwen Chen, Jinpeng Dong, Xiao Han   +3 more
doaj   +1 more source

Low-PAPR Waveforms with Shaped Spectrum for Enhanced Low Probability of Intercept Noise Radars

Remote Sensing, 2021
Noise radars employ random waveforms in their transmission as compared to traditional radars. Considered as enhanced Low Probability of Intercept (LPI) radars, they are resilient to interference and jamming and less vulnerable to adversarial exploitation
Kubilay Savci, Gaspare Galati, Gabriele Pavan   +2 more
doaj   +1 more source

Explaining Leibniz-equivalence as difference of non-inertial appearances: dis-solution of the Hole Argument and physical individuation of point-events [PDF]

, 2006
"The last remnant of physical objectivity of space-time" is disclosed in the case of a continuous family of spatially non-compact models of general relativity (GR). The {\it physical individuation} of point-events is furnished by the intrinsic degrees of
Lusanna, Luca, Pauri, Massimo
core   +3 more sources

Interior Models of Mercury and Conditions for Iron Snow Formation in a Fe‐S‐Si Core

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Mercury's unique interior structure and magnetic field generation remain to be fully understood. We construct models to further constrain Mercury's interior and test the hypothesis that iron snow within the liquid core drives the dynamo.
Abigail H. Dunnigan, Dunyu Liu, Gregor B. Steinbrügge, Attilio Rivoldini, Mathieu Dumberry, Hao Cao, Krista M. Soderlund   +6 more
wiley   +1 more source

A Deep Reinforcement Learning Method with a Low Intercept Probability in a Netted Synthetic Aperture Radar

Remote Sensing
A deep reinforcement learning (DRL)-based power allocation method is proposed to achieve a low probability of intercept (LPI) in a netted synthetic aperture radar (SAR).
Longhao Xie, Ziyang Cheng, Ming Li, Huiyong Li   +3 more
doaj   +1 more source

Optimal Power Allocation Algorithm for Radar Network Systems Based on Low Probability of Intercept Optimization(in English)

Leida xuebao, 2014
A novel optimal power allocation algorithm for radar network systems is proposed for Low Probability of Intercept (LPI) technology in modern electronic warfare. The algorithm is based on the LPI optimization.
Shi Chen-guang, Wang Fei, Zhou Jian-jiang, Chen Jun   +3 more
doaj   +1 more source

Low probability of intercept‐based cooperative node selection and transmit resource allocation for multi‐target tracking in multiple radars architecture

IET Signal Processing, 2022
A low probability of intercept (LPI)‐based cooperative node selection and transmit resource allocation (CNS‐TRA) strategy is proposed for multi‐target tracking in multiple radars architecture (MRA).
Lintao Ding, Chenguang Shi, Fei Wang, Jianjiang Zhou   +3 more
doaj   +1 more source

Assessing Potential Landing Sites With Favorable Illumination and Accessible, Potentially Volatile‐Rich Permanently Shadowed Regions Within Artemis Candidate Landing Regions

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, Lauren M. Berger, Hephzibah Christopher, Kanori Sugimoto, Ashka D. Thaker, Louis Carton, William Jo, Seungil Lee, Riccardo Pedrelli, Pedro Sanchez, David A. Kring   +10 more
wiley   +1 more source

Global Biodiversity Framework Targets Can Drive Action on Insect Declines, but Lack Robust Indicators to Prove Their Effectiveness

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, Perpetra Akite, Shawan Chowdhury, Federico Riva, Rob Cooke, Ellie E. Dyer, Joseph Millard, Charlotte L. Outhwaite, James G. Rodger, Cang Hui, Justin E. Isip, J. Iwan Jones, John F. Murphy, Tim Newbold, Andy Purvis, Helen E. Roy, Grace Skinner, Ben A. Woodcock, Iris Berger, Sayam U. Chowdhury, William H. Morgan, András Báldi, Harriet Bartlett, Péter Batáry, Áron D. Bihaly, Amaël Borzée, Karel Chobot, Joette Crosier, Kristy Deiner, Adam J.M. Devenish, Arne Devriese, Anna Ermakova, Harith Farooq, Alexander Fedotov, Jonáš Gaigr, Róbert Gallé, Alexandre Gategeko, Huanzhi Gong, Ian Gordon, Felix Herzog, Andrew Jacobson, Vignesh Kamath, Upma Manral, Riho Marja, Caroline Martin, Delphine Mpayimana, Fiona Mutekanga, Piotr Naskrecki, Philbert Ndahayo, Donath Nkurikiyimana, Jean de Dieu Nsenganeza, Jean Pierre Ntibabarira, Joseph Poston, Chevonne Reynolds, Jean Aimé Ruticumugambi, Prahalad Srikanthan, Edina Török, Inam Yekwayo, Nick J.B. Isaac, Lynn V. Dicks   +59 more
wiley   +1 more source