Results 21 to 30 of about 9,681 (179)

On the detection of small UAV using a GSM passive coherent location system [PDF]

open access: yes, 2022
S.513-516The widespread availability of consumer grade drones in the recent time has lead to new security and surveillance challenges. The detection and localization of these unmanned aerial vehicles (UAV) mark an essential step to identify possible ...
Zemmari, R., Knoedler, B., Koch, W.
core   +1 more source

A Particle Filter for Track-before-Detect in GSM Passive Coherent Location [PDF]

open access: yes, 2022
S.1932-1937This paper describes a Track-before-Detect method using a Particle Filter that operates on raw unthresholded sensor data provided by a Passive Coherent Location system using GSM signals as illuminators of opportunity. The classical approach of
Koch, Wolfgang   +2 more
core   +1 more source

Method of Calculating Desynchronization of DVB-T Transmitters Working in SFN for PCL Applications

open access: yesSensors, 2020
This paper presents a novel method of calculating desynchronization between transmitters working in a single frequency digital video broadcasting-terrestrial (DVB-T) network.
Karol Klincewicz, Piotr Samczyński
doaj   +1 more source

Reference signal extraction for GSM passive coherent location [PDF]

open access: yes, 2022
S.52-55This paper investigates two equalization methods enabling the passive coherent location (PCL) system using GSM as illuminator of opportunity to eliminate the distortion of the reference signal. The first one is the Constant Modulus Algorithm (CMA)
Zemmari, R.
core  

Counter-Passive Coherent Locator (C-PCL)—A Method of Remote Detection of Passive Radars for Electronic Warfare Systems [PDF]

open access: yes, 2021
Passive Coherent Location methods and techniques have an established position in the modern state-of-the-art radar. Inexpensive, easy to deploy and undetectable for other sensors, passive radars are growing in popularity.
Michał Knioła   +2 more
core   +1 more source

SSB-Based Signal Processing for Passive Radar Using a 5G Network

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article presents an alternative processing chain for the passive radar using fifth-generation (5G) standard technology for broadband cellular networks as illuminators of opportunity. The proposition is to use a 5G synchronization signal block'
Karol Abratkiewicz   +5 more
doaj   +1 more source

Polar firn properties in Greenland and Antarctica and related effects on microwave brightness temperatures [PDF]

open access: yesThe Cryosphere, 2023
In studying the mass balance of polar ice sheets, fluctuations in firn density near the surface is a major uncertainty. In this paper, we explore these variations at locations on the Greenland Ice Sheet and at the Dome C location in Antarctica.
H. Xu   +6 more
doaj   +1 more source

Beamforming of LOFAR Radio-Telescope for Passive Radiolocation Purposes

open access: yesRemote Sensing, 2021
This paper presents the results of investigations on the beamforming of a low-frequency radio-telescope LOFAR which can be used as a receiver in passive coherent location (PCL) radars for aerial and space object detection and tracking. The use of a LOFAR
Aleksander Droszcz   +4 more
doaj   +1 more source

Signal characterisation and processing in the forward scatter mode of bistatic passive coherent location systems [PDF]

open access: yes, 2013
The transfer of the forward scatter (FS) concept to passive coherent location (FS PCL) systems provides a new emerging area of research. This article is dedicated to investigate various aspects of a bistatic passive coherent location (PCL) system ...
Vladimir Sizov   +11 more
core   +1 more source

Finite Time Lyapunov Exponent Analysis of Model Predictive Control and Reinforcement Learning

open access: yesIEEE Access, 2023
Finite-time Lyapunov exponents (FTLEs) provide a powerful approach to compute time-varying analogs of invariant manifolds in unsteady fluid flow fields.
Kartik Krishna   +2 more
doaj   +1 more source

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