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The wire method is a more rapid and less costly method to measure impedances of RF components compared to methods using a beam. A setup using a single displaced wire to excite and measure transverse resonant modes in accelerating structures…

Accelerator Physics · Physics 2008-11-26 N. Baboi , G. B. Bowden , R. M. Jones , S. G. Tantawi , J. R. Lewandowski

Exploring motion information is important for the motion deblurring task. Recent the window-based transformer approaches have achieved decent performance in image deblurring. Note that the motion causing blurry results is usually composed…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Duosheng Chen , Shihao Zhou , Jinshan Pan , Jinglei Shi , Lishen Qu , Jufeng Yang

The conventional readout method of the RPC detector uses two sets of orthogonal readout strips placed at the both sides of the gas gap to collect signals of opposite polarities to obtain space points. A new readout method utilizing the…

Instrumentation and Detectors · Physics 2022-11-22 Y. X. Ding , X. Y. Xie , J. X. Li , K. L. Han , Y. J. Sun

Compressed sensing (CS) is a powerful method routinely employed to accelerate image acquisition. It is particularly suited to situations when the image under consideration is sparse but can be sampled in a basis where it is non-sparse. Here…

Image and Video Processing · Electrical Eng. & Systems 2022-07-18 Xudong Lv , Ashok Ajoy

Cadmium has been used historically as an important component of integral experiments because of its high thermal neutron absorption cross section. Correct interpretation of such experiments depends on accurate differential neutron cross…

Nuclear Experiment · Physics 2018-01-11 G. Leinweber , D. P. Barry , R. C. Block , J. A. Burke , K. E. Remley , M. J. Rapp , Y. Danon

The linear inverse source and scattering problems are studied from the perspective of compressed sensing, in particular the idea that sufficient incoherence and sparsity guarantee uniqueness of the solution. By introducing the sensor as…

Data Analysis, Statistics and Probability · Physics 2009-05-19 Albert Fannjiang , Pengchong Yan , Thomas Strohmer

Reverberation mapping offers one of the best techniques for studying the inner regions of QSOs. It is based on cross-correlating continuum and emission-line light curves. New time-resolved optical surveys will produce well sampled light…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 S. Fine , T. Shanks , S. M. Croom , P. Green , B. C. Kelly , E. Berge , R. Chornock , W. S. Burgett , E. A. Magnier , P. A. Price

The knowledge of the radar signature of aerial targets, such as drones, is critical in designing an effective radar detection system. It is a challenging task to measure the radar cross-section (RCS) of small drones. This paper describes a…

Signal Processing · Electrical Eng. & Systems 2019-11-15 Martins Ezuma , Mark Funderburk , Ismail Guvenc

Psychoacoustic experiments have shown that directional properties of the direct sound, salient reflections, and the late reverberation of an acoustic room response can have a distinct influence on the auditory perception of a given room.…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-28 Thomas Deppisch , Sebastià V. Amengual Garí , Paul Calamia , Jens Ahrens

When treating the absorption of light, one focuses on the absorption coefficient, related to the probability of photons to survive while traversing a layer of material. From the point of view of particles doing the absorption, however, the…

High Energy Astrophysical Phenomena · Physics 2018-09-26 Nicola Locatelli , Gabriele Ghisellini

In this paper, we show the RCS enhancement due to the acoustic disturbances around a pulsating sphere. The acoustic variation is modeled with the dielectric inhomogeneities around the sphere caused by the pressure fluctuations due to the…

Applied Physics · Physics 2023-08-17 V. Viswarupa , Yoginder Kumar Negi , N. Balakrishnan

This paper proposes to leverage intelligent reflecting surface (IRS) backscatter to realize radio-frequency-chain-free uplink-transmissions (RFCF-UT). In this communication paradigm, IRS works as an information carrier, whose elements are…

Signal Processing · Electrical Eng. & Systems 2022-07-22 Sai Xu , Yanan Du , Jiliang Zhang , Jiangzhou Wang , Jie Zhang

Measuring room impulse responses (RIRs) at multiple spatial points is a time-consuming task, while simulations require detailed knowledge of the room's acoustic environment. In prior work, we proposed a method for estimating the early part…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-16 Kathleen MacWilliam , Thomas Dietzen , Toon van Waterschoot

Radio interferometry is a powerful technique for astronomical imaging. The theory of Compressed Sensing (CS) has been applied recently to the ill-posed inverse problem of recovering images from the measurements taken by radio…

Instrumentation and Methods for Astrophysics · Physics 2016-11-15 J. D. McEwen , Y. Wiaux

We represent results of calculations of coherent synchrotron radiation (CSR) of the relativistic bunch in an undulator with a vacuum chamber of arbitrary cross section with a new algorithm. This algorithm associated with direct calculations…

Accelerator Physics · Physics 2011-09-01 E. G. Bessonov , A. A. Mikhailichenko

We study coherent synchrotron radiation (CSR) in a perfectly conducting vacuum chamber of rectangular cross section, in a formalism allowing an arbitrary sequence of bends and straight sections. We apply the paraxial method in the frequency…

Accelerator Physics · Physics 2016-06-09 Robert L. Warnock , David A. Bizzozero

A statistical backscatter channel model for indoor clutter is developed for indoor RF sensing applications based on measurements. A narrowband 28 GHz sounder used a quazi-monostatic radar arrangement with an omnidirectional transmit antenna…

A method is described intended for distributed calibration of a probe microscope scanner consisting in a search for a net of local calibration coefficients (LCCs) in the process of automatic measurement of a standard surface, whereby each…

Materials Science · Physics 2018-12-13 Rostislav V. Lapshin

The estimation of room impulse responses (RIRs) between static loudspeaker and microphone locations can be done using a number of well-established measurement and inference procedures. While these procedures assume a time-invariant acoustic…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-14 Kathleen MacWilliam , Thomas Dietzen , Randall Ali , Toon van Waterschoot

Compressive sensing (CS) combines data acquisition with compression coding to reduce the number of measurements required to reconstruct a sparse signal. In optics, this usually takes the form of projecting the field onto sequences of random…

Information Theory · Computer Science 2018-10-24 Davood Mardani , H. Esat Kondakci , Lane Martin , Ayman F. Abouraddy , George K. Atia