Results 31 to 40 of about 41,432 (298)
In vivo bistatic dual-aperture ultrasound imaging and elastography of the abdominal aorta
Frontiers in PhysiologyIntroduction: In this paper we introduce in vivo multi-aperture ultrasound imaging and elastography of the abdominal aorta. Monitoring of the geometry and growth of abdominal aortic aneurysms (AAA) is paramount for risk stratification and intervention ...
Vera H. J. van Hal +5 more
doaj +1 more source
A Multi-Channel Attention Network for SAR Interferograms Filtering Applied to TomoSAR
Remote Sensing, 2023 Tomographic synthetic aperture radar (TomoSAR) is an advanced synthetic aperture radar (SAR) interferometric technique that can retrieve 3-D spatial information.
Jie Li +3 more
doaj +1 more source
JHK' Imaging Photometry of Seyfert 1 AGNs and Quasars I: Multi-Aperture Photometry
, 2002 Near-infrared $JHK'$ imaging photometry was obtained of 331 AGNs consisting mainly of Seyfert 1 AGNs and quasars (QSOs). This sample was selected to cover a range of radio emission strength, redshift from $z=0$ to 1, and absolute $B$-magnitude from $M_B=-
Alonso-Herrero A. +8 more
core +2 more sources
Orthogonal waveform separation based on echo compression for airborne MIMO-SAR systems
The Journal of Engineering, 2019 Attention has been devoted to multi-input multi-output (MIMO) synthetic aperture radar (SAR) systems in recent years. The applications of MIMO-SAR systems which involve high-resolution wide-swath remote sensing, three-dimensional imaging, and multi ...
Jie Wang, Longyong Chen, Xingdong Liang
doaj +1 more source
Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]
, 2008 Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica +4 more
core
PMAS: The Potsdam Multi Aperture Spectrophotometer. II. The Wide Integral Field Unit PPak
, 2005 PPak is a new fiber-based Integral Field Unit (IFU), developed at the Astrophysical Institute Potsdam, implemented as a module into the existing PMAS spectrograph.
Andreas Kelz +9 more
core +1 more source
Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology
Advanced Engineering Materials, EarlyView.We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham +7 more
wiley +1 more source
Design and Performance of a Multi-Point Scan Confocal Microendoscope
Photonics, 2014 Confocal fluorescence microendoscopy provides high-resolution cellular-level imaging via a minimally invasive procedure, but requires fast scanning to achieve real-time imaging in vivo. Ideal confocal imaging performance is obtained with a point scanning
Matthew D. Risi +4 more
doaj +1 more source
Computational phase correction algorithms for multi-aperture systems
Journal of the Optical Society of America A, 2020 Aperture cophasing can increase the resolution of a multi-aperture array while reducing optical system size and accounting for phase errors from hardware misalignments and atmospheric turbulence. Remapping apertures using an anamorphic pupil relay can separate the spatial frequency spectrum of a previously continuous modulation
Sarah E. Krug, David J. Rabb
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source