Results 21 to 30 of about 9,318 (262)

Using EMD-FrFT filtering to mitigate high power interference in chirp tracking radars [PDF]

open access: yes, 2011
This letter presents a new signal processing subsystem for conventional monopulse tracking radars that offers an improved solution to the problem of dealing with manmade high power interference (jamming).
Elgamel, Sherif, Soraghan, John
core   +1 more source

Research Prospect of Anti-Jamming Strategy for the Satellite Internet

open access: yes天地一体化信息网络, 2022
As an important infrastructure of the national information system, the satellite internet is of great signifi cance to the national security.Thus, it needs to ensure the validity and reliability of the data transmission in the hostile jamming environment.
Chen HAN, Aijun LIU, Kang AN
doaj   +2 more sources

The packing of granular polymer chains [PDF]

open access: yes, 2009
Rigid particles pack into structures, such as sand dunes on the beach, whose overall stability is determined by the average number of contacts between particles.
Donev   +11 more
core   +1 more source

A Joint Azimuth Multichannel Cancellation (JAMC) Antibarrage Jamming Scheme for Spaceborne SAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The azimuth multichannel synthetic aperture radar (SAR) increases the swath width by reducing the pulse repetition frequency (PRF), thus providing an effective scheme for realizing high-resolution and wide-swath (HRWS) imaging simultaneously.
Shuohan Cheng   +6 more
doaj   +1 more source

High Speed Dim Air Target Detection Using Airborne Radar under Clutter and Jamming Effects [PDF]

open access: yes, 2015
The challenging potential problems associated with using airborne radar in detection of high Speed Maneuvering Dim Target (HSMDT) are the highly noise, jamming and clutter effects.
Almslmany, A. E.   +2 more
core   +2 more sources

Master equation for the probability distribution functions of forces in soft particle packings [PDF]

open access: yes, 2014
Employing molecular dynamics simulations of jammed soft particles, we study microscopic responses of force-chain networks to quasi-static isotropic (de)compressions. We show that not only contacts but also interparticle gaps between the nearest neighbors
Luding, Stefan   +2 more
core   +2 more sources

Collapse of quasi-two-dimensional wet granular columns [PDF]

open access: yes, 2013
This paper deals with the experimental characterization of the collapse of wet granular columns in the pendular state, with the purpose of collecting data on triggering and jamming phenomena in wet granular media.
Artoni, Riccardo   +4 more
core   +2 more sources

Transport on complex networks: Flow, jamming and optimization [PDF]

open access: yes, 2006
Many transport processes on networks depend crucially on the underlying network geometry, although the exact relationship between the structure of the network and the properties of transport processes remain elusive.
Allen O.   +5 more
core   +2 more sources

Joint FrFT‐FFT basis compressed sensing and adaptive iterative optimization for countering suppressive jamming

open access: yesETRI Journal, 2019
Accurate suppressive jamming is a prominent problem faced by radar equipment. It is difficult to solve signal detection problems for extremely low signal to noise ratios using traditional signal processing methods.
Yang Zhao   +5 more
doaj   +1 more source

Neural Network-Guided Sparse Recovery for Interrupted-Sampling Repeater Jamming Suppression

open access: yesInternational Journal of Antennas and Propagation, 2021
Interrupted-sampling repeater jamming (ISRJ) is a new type of DRFM-based jamming designed for linear frequency modulation (LFM) signals. By intercepting the radar signal slice and retransmitting it many times, ISRJ can obtain radar coherent processing ...
Zijian Wang   +4 more
doaj   +1 more source

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