Results 61 to 70 of about 1,208,570 (249)
GSM passive radar for medium range surveillance
, 2022 S.49-52This paper presents a passive radar system using GSM as illuminator of opportunity. The new feature is the used high performance uniform linear antenna (ULA) for extracting both the reference and the echo signal in a software defined radar.
Wirth, W.-D., Nickel, U., Zemmari, R.
core
Advanced Science, EarlyView.Acidic CO2 electroreduction to formic acid is enabled by integrating mixed Sn/SnOx nanoclusters, K+‐regulated interfacial solvation, and Janus wettability. Coordinated control of active sites, interfacial water, and gas‐liquid transport suppresses hydrogen evolution and delivers approximately 85% HCOOH Faradaic efficiency at 400 mA cm−2.
Qiaoqi Guo +8 more
wiley +1 more source
Data ambiguity in passive radar tracking
, 2022 S.349-354A multistatic passive radar system exploits third party transmitters like radio or television transmitters for target surveillance. Signals of non-cooperative illuminators are generally not designed for radar purposes resulting in possibly low ...
Brotje, M., Nickel, U.
core +1 more source
Advanced Science, EarlyView.In this work, we present a bile‐based memristor hardware framework that enables direct, label‐free identification of cholelithiasis and gallbladder cancer at the device level. The Ag/bile/FTO memristor features stable resistive switching and disease‐specific electrical responses, providing a conceptual foundation for circuits and an integrated ERCP ...
Junming Zhu +17 more
wiley +1 more source
Developments in target micro-Doppler signatures analysis : radar imaging, ultrasound and through-the-wall radar [PDF]
, 2013 Target motions, other than the main bulk translation of the target, induce Doppler modulations around the main Doppler shift that form what is commonly called a target micro-Doppler signature.
Woodbridge, K. +3 more
core +4 more sources
Leida xuebao, 2018 In this paper, experimental results of micro-Doppler effect on a multi-rotor drone with digital television based passive radar are discussed. First, the bistatic passive radar micro-motion model of the drone is established.
Liu Yuqi +5 more
doaj +1 more source
DAB based passive radar: Performance calculations and trials
, 2008 Copyright © 2008 IEEEThis paper investigates the potential performance of an experimental passive bistatic radar that uses target illuminations by digital audio broadcasts.
Cristopher Coleman +3 more
core +1 more source
Maritime surveillance using GSM passive radar
, 2022 S.76-82The application of GSM based passive radar to maritime surveillance is demonstrated by the results of a campaign, that has been carried out around the Bay of Mecklenburg.
Nickel, U., Zemmari, R., Daun, M.
core +1 more source
Functional MXene Inks for Printed Electronics: Chemistry, Rheology, and Devices
Advanced Science, EarlyView.Functional MXene inks are emerging as building blocks for MXetronics, connecting MXene synthesis, surface functionalization, ink formulation, and advanced printing with device‐level applications. This review maps how composition, stability, rheology, and processability govern printed structures and enable high‐performance sensors, energy‐storage ...
Shahzaib Ali +6 more
wiley +1 more source
UAV Detection with Passive Radar: Algorithms, Applications, and Challenges
DronesThe unmanned aerial vehicle (UAV) industry has developed rapidly in recent years and is being applied in a wide range of fields. However, incidents involving unauthorized UAVs that threaten public safety have occurred frequently, highlighting the need ...
Zhibo Tang +3 more
doaj +1 more source