Grating lobes suppression by adding virtual receiving subaperture in synthetic aperture imaging
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2016.12.013
Abstract: HighlightsThe grating lobes suppression by the virtual reception in ultrasound imaging.The theoretical model explains the properties of virtual reception subaperture.The quality of the images is comparable with synthetic aperture reconstruction. Abstract A method of suppression… read more here.
Keywords: suppression; vrs; grating lobes; aperture ... See more keywords
Sparse Frequency Waveform Optimization for High-Resolution ISAR Imaging
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2019.2937965
Abstract: The stepped-frequency waveform is usually used to synthesize a wideband signal in the radar imaging system. To reduce the amount of data and coherent pulse intervals (CPIs), as well as to improve antijamming abilities, the… read more here.
Keywords: optimization; waveform; frequency; isar imaging ... See more keywords
Suppressing Grating Lobes for Transcranial Focused Ultrasound System by Frequency-Modulated Excitation
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2020.3047664
Abstract: Transcranial focused ultrasound is a novel noninvasive therapeutic modality for glioblastoma and other disorders of the brain. However, because the phase aberrations caused by the skull need to be corrected with computed tomography (CT) images,… read more here.
Keywords: frequency; excitation; focus; grating lobes ... See more keywords
Grating Lobe Reduction in Plane-Wave Imaging With Angular Compounding Using Subtraction of Coherent Signals
Sign Up to like & getrecommendations! Published in 2022 at "IEEE transactions on ultrasonics, ferroelectrics, and frequency control"
DOI: 10.1109/tuffc.2022.3217993
Abstract: Plane-wave imaging (PWI) with angular compounding has gained in popularity over recent years, because it provides high frame rates and good image properties. However, most linear arrays used in clinical practice have a pitch that… read more here.
Keywords: presence grating; wave imaging; plane wave; angular compounding ... See more keywords
Suppressing grating lobes of large-aperture optical phased array with circular array design
Sign Up to like & getrecommendations! Published in 2023 at "Applied Optics"
DOI: 10.1364/ao.488916
Abstract: An optical phased array (OPA), especially a two-dimensional (2D) OPA, suffers from the trade-off among steering range, beam width, and the number of antennas. Aperiodic 2D array designs currently aimed to reduce the number of… read more here.
Keywords: number antennas; phased array; aperture; optical phased ... See more keywords
Vernier optical phased array lidar transceivers.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.451578
Abstract: Optical phased arrays (OPAs) which beam-steer in two dimensions (2D) are currently limited to grating row spacings well above a half wavelength. This gives rise to grating lobes along one axis which limit the field… read more here.
Keywords: beam; optical phased; grating lobe; lidar ... See more keywords