Results 21 to 30 of about 1,247,246 (231)
Microwave Lens for Polar Molecules [PDF]
, 2010 We here report on the implementation of a microwave lens for neutral polar molecules suitable to focus molecules both in low-field-seeking and in high-field-seeking states.
Gerard Meijer +7 more
core +2 more sources
Highly Efficient Angular Array Calibration Based on the Modal Wave Expansion Technique
IEEE Open Journal of Antennas and Propagation, 2021 In the upper millimeter wave range above 100 GHz, the effect of array imperfections like manufacturing uncertainties and mutual antenna coupling increases, which leads to deviations from the nominal antenna positions and angle-dependent errors in ...
Andre Durr +3 more
doaj +1 more source
IEEE Access, 2020 This paper focuses on the application of radio tomographic imaging in through-the-wall image reconstruction. By using the simple wireless communication devices, e.g., Wi-Fi cards, the whole building layout can be reconstructed with only the received ...
Qichang Guo +4 more
doaj +1 more source
Non-absorbing high-efficiency counter for itinerant microwave photons [PDF]
, 2014 Detecting an itinerant microwave photon with high efficiency is an outstanding problem in microwave photonics and its applications. We present a scheme to detect an itinerant microwave photon in a transmission line via the nonlinearity provided by a ...
Combes, Joshua +4 more
core +2 more sources
Leida xuebao, 2016 Sparse microwave imaging is new concept, theory and methodology of microwave imaging, which introduces the sparse signal processing theory to microwave imaging and combines them together to overcome the paradox of increasing system complexity and imaging
Zhang Zhe +3 more
doaj +1 more source
Estimating Significant Wave Height from SAR with Long Integration Times
Applied Sciences, 2022 Synthetic aperture radar (SAR) is an important means of estimating significant wave height with obvious advantages of all-day, all-weather, high resolution and wide swath coverage.
Yawei Zhao +4 more
doaj +1 more source
RIPless Based Radar Waveform Analysis in Sparse Microwave Imaging
Leida xuebao, 2013 The echo data can be modeled as the product of the Toeplitz matrix and reflectivity of the observed scene. The row of the Toeplitz matrix is the time-shift of the transmitted signal.
Zhao Yao +3 more
doaj +1 more source
Acrylic denture base repair (Part II): St-rength of acrylic denture base cured by four different techniques [PDF]
Al-Rafidain Dental Journal, 2006 Aim: To investigate the effect of repair techniques, surface treatment, and repair space design (3 mm space and no repair space) on the transverse, and tensile strengths of repaired denture base. Materials and methods: Four hundred and sixteen samples of
Repair acrylic denture base, microwave, thermo press. +1 more
doaj +1 more source
Detailed study of the microwave emission of the supernova remnant 3C 396 [PDF]
, 2016 We have observed the supernova remnant 3C~396 in the microwave region using the Parkes 64-m telescope. Observations have been made at 8.4 GHz, 13.5 GHz, and 18.6 GHz and in polarisation at 21.5 GHz.
Battistelli, E. S. +10 more
core +3 more sources
SNR‐dependent drone classification using convolutional neural networks
IET Radar, Sonar & Navigation, 2022 Radar sensing offers a method of achieving 24‐h all‐weather drone surveillance, but in order to be maximally effective, systems need to be able to discriminate between birds and drones.
Holly Dale +5 more
doaj +1 more source