Results 81 to 90 of about 1,208,570 (249)
Experimental validation of Kalman filter based tracking in passive radar systems
, 2022 S.1634-1637Target localization and tracking capabilities of a passive radar system based on exploitation of DVB-T transmission as a signal of opportunity are demonstrated.
Heckenbach, J. +3 more
core +1 more source
Advanced Science, EarlyView.A dual‐network hydrogel was prepared via a one‐pot method, incorporating vermiculite nanosheets as an additive. The negatively charged vermiculite nanosheets not only coordinate with zinc ions to facilitate Zn plating/stripping and suppress Zn dendrite growth, but also adsorb polyiodides to inhibit the shuttle effect, which significantly improves the ...
Yunlong Zhou +7 more
wiley +1 more source
Passive Bistatic Radar (PBR) Demonstrator
, 2007 We present a system characterisation of a Passive Bistatic Radar (PBR). The system under investigation exploits 'illuminators of opportunity', which in this case are commercial, non-cooperative, VHF FM broadcast transmissions.
H. D. GRIFFITHS +7 more
core +1 more source
A Biomimetic Solvatochromic Chip With Optimized Chemical Diversity for On‐Site Liquid Identification
Advanced Science, EarlyView.A compact biomimetic photonic‐gustatory chip uses Hansen‐solubility‐parameter‐guided solvatochromic disks to create distinct color patterns in organic liquids. An optimized four‐disk array distinguishes solvent types, ratios, homologues, isomers, and alcoholic beverages. Coupled with smartphone imaging and deep learning, it identifies 80 liquid classes
Jintao Zhang +9 more
wiley +1 more source
Experimental comparison of Starlink and OneWeb signals for passive radar
, 2023 Given the limited available information about Star-link and OneWeb signals but the relevant capabilities that they may provide, this work is focused on the experimental acquisition and comparison for passive radar applications of the user downlink ...
Ummenhofer, Martin +5 more
core +1 more source
Spatiotemporal Regulation of Hierarchical Assembly of Hydroxyapatite for Enamel Remineralization
Advanced Science, EarlyView.Biomimetic repair exhibits unique advantages for enamel regeneration compared with conventional clinical treatments. An enzymatic mineralization system (EMS) is developed, where the resulting HAP nanorods hierarchically assemble into a highly ordered structure on the enamel surface through the spatiotemporal modulation of interfacial energies of ...
Zhenhang Tang +15 more
wiley +1 more source
Advanced Science, EarlyView.A charge‐transfer‐engineered Ni catalyst derived from an atomically mixed layered precursor enables efficient ammonia‐to‐hydrogen conversion. Cr‐to‐Ni electron transfer creates electron‐rich Ni active sites that favor NH3 adsorption, modify the dehydrogenation energetics, and weaken N2 binding to facilitate product desorption. This electronically tuned
Donghyeok Kim +9 more
wiley +1 more source
Compressive sensing for passive surveillance radar using DAB signals
, 2022 6 S.Bistatic/passive radars offer several advantages over monostatic radars. One of them is that the separation of transmitter and receiver opens the possibility to illuminate the targets from different aspect angels compared to the receiver.
Weiß, M.
core +1 more source
Advanced Science, EarlyView.We develop bio‐based, star‐branched polyamides from itaconic acid and cadaverine with tunable lower critical solution temperature (LCST) transitions for dynamic solar modulation. Specific metal ion coordination with pyrrolidone moieties drives precise phase transitions via calcium‐induced salting‐in and sodium‐induced salting‐out mechanisms. Formulated
Jie Liu +6 more
wiley +1 more source
Multistatic Passive Weather Radar [PDF]
, 2020 Practical and accurate estimation of three-dimensional wind fields is an ongoing challenge in radar meteorology. Multistatic (single transmitter / multiple receivers) radar architectures offer a cost effective solution for obtaining the multiple Doppler ...
Byrd, Andrew
core