Results 161 to 170 of about 1,581 (275)

Active control of single-photon spontaneous emission out-coupling enhancement by rotation modulation of hyperbolic metamaterials. [PDF]

iScience
Ma Y, Imran M, Musa MY, Khan SU, Li R.
europepmc   +1 more source

Improving Digital Mapping of Soil Organic Carbon and Total Nitrogen Through Integration of Sentinel‐1 Backscatter, InSAR Coherence, and Sentinel‐3 OLCI/SLSTR Observations

Land Degradation &Development, EarlyView.
ABSTRACT The potential of optical satellites for the spatial prediction of soil organic carbon (SOC) and total nitrogen (STN) has long been recognized. Owing to their balanced spatial–temporal resolution, multisource observational capabilities, and unprecedented availability of free data, Sentinel satellites offer unique opportunities for mapping soil ...
Tao Zhou, Xueting Zheng, Hongmin Zhang, Yajun Geng, Huijie Li, Junming Liu, Tingting Liu, Asim Biswas, Bingcheng Si   +8 more
wiley   +1 more source

Range-doppler algorithm of multireceiver synthetic aperture sonar using nonuniform signal. [PDF]

PLoS One
Huang P, Fan Y, Teng X, Tan J, Guo L.
europepmc   +1 more source

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser &Photonics Reviews, EarlyView.
This article demonstrates a record‐breaking microwave frequency comb generator using an ultrahigh‐harmonic‐order mode‐locked optoelectronic oscillator. By integrating dual recirculating loops into a low‐coherence system, the researchers achieved a harmonic order of 956 with superior noise suppression.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
wiley   +1 more source

USING NEURAL NETWORK IN RADAR EMITTER'S IDENTIFICATION [PDF]

The International Conference on Electrical Engineering, 1998
Magdy Kamal, Fawzy Ibrahim, Nabil Girgis
openaire   +1 more source

Asynchronous to synchronous waveform conversion for high frequency microwave and optical signals without external triggering. [PDF]

Sci Rep
Pourkazemi A, Tayebi S, Akbarian F, Zarghami A, Sharabiany MG, Stiens J.   +5 more
europepmc   +1 more source

Optical‐to‐Microcomb Stability Transfer for Ultrastable Timing and Microwave/Millimeter‐Wave Generation

Laser &Photonics Reviews, EarlyView.
This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn, Junyong Choi, Daewon Suk, Hansuek Lee, Jungwon Kim   +4 more
wiley   +1 more source

Impact of Wind on Rainfall Measurements Obtained from the OTT Parsivel² Disdrometer. [PDF]

Sensors (Basel)
Chinchella E, Cauteruccio A, Lanza LG.
europepmc   +1 more source

Digital surveillance of animals and nature recovery

People and Nature, EarlyView.
Abstract Digital surveillance technologies (DSTs) are widely applied in nature recovery for their potential to generate novel data on species and ecosystems through digital tracking, automation (e.g. from hazardous locations) and from newly recruited citizen scientists.
William M. Adams
wiley   +1 more source

Unobtrusive Sensing at Home Towards Healthcare 5.0: Technologies, Applications, and Future Directions. [PDF]

Biosensors (Basel)
Oliveira R, Simões J, Correia P, Teixeira A, Costa F, Leitão C, Silva AL.   +6 more
europepmc   +1 more source