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   Articles with "subaperture" as a keyword



Grating lobes suppression by adding virtual receiving subaperture in synthetic aperture imaging

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recommendations! 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

High-Resolution Real-Time Imaging Processing for Spaceborne Spotlight SAR With Curved Orbit via Subaperture Coherent Superposition in Image Domain

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recommendations! Published in 2022 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2022.3150025

Abstract: With the increasing of application requirements, the high-resolution real-time imaging processing of the spaceborne spotlight synthetic aperture radar (SAR) has been developed. Since the traditional real-time imaging algorithms have the problems that the range model… read more here.

Keywords: time; subaperture; curved orbit; resolution ... See more keywords

Subaperture Keystone Transform Matched Filtering Algorithm and Its Application for Air Moving Target Detection in an SBEWR System

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recommendations! Published in 2023 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2023.3245295

Abstract: Long-time coherent integration is an effective approach to improve detection performance for weak air moving targets (AMTs). The range position variation and azimuth Doppler variation will easily exceed range gate and Doppler resolution in a… read more here.

Keywords: subaperture; performance; air moving; detection ... See more keywords

Enhanced BP Algorithm Combined With Semantic Segmentation and Subaperture for Improving Agricultural Scene Image Quality in GEO SAR

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recommendations! Published in 2025 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2024.3520119

Abstract: Geosynchronous synthetic aperture radar (GEO SAR) plays a crucial role in various fields, such as crop growth monitoring, irrigation management, terrain and soil analysis, and natural disaster warning. However, GEO SAR images often suffer from… read more here.

Keywords: subaperture; image quality; geo sar; moving targets ... See more keywords

Moving Ship Velocity Estimation Using TanDEM-X Data Based on Subaperture Decomposition

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recommendations! Published in 2018 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2018.2846399

Abstract: In this letter, a velocity estimation method for moving ships in synthetic aperture radar (SAR) images is proposed based on a subaperture decomposition technique. In contrast to traditional methods, our method needs only a few… read more here.

Keywords: subaperture; subaperture decomposition; based subaperture; velocity estimation ... See more keywords

Mainlobe Deceptive Jammer Mitigation With Subaperture-FDA-MIMO Radar

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recommendations! Published in 2024 at "IEEE Transactions on Aerospace and Electronic Systems"

DOI: 10.1109/taes.2023.3336826

Abstract: In this article, mainlobe deceptive jammer mitigation for multiple targets is investigated using a subaperture-frequency diverse array-multiple-input multiple-output (MIMO) radar. At the modeling stage, the transmit array is divided into multiple overlapped subapertures consisting of… read more here.

Keywords: subaperture; mainlobe deceptive; deceptive jammer; jammer ... See more keywords

A Multichannel Motion Compensation Algorithm Based on Adaptive Subaperture Division for Terahertz Circular SAR

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recommendations! Published in 2024 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2024.3470257

Abstract: Terahertz (THz) circular synthetic aperture radar (CSAR) demands higher precision in motion compensation (MOCO), posing significant challenges. To address this issue, this article proposes a multichannel MOCO algorithm based on adaptive subaperture division (MCAAD). First,… read more here.

Keywords: subaperture; algorithm based; compensation; division ... See more keywords

Wide-Angle CSAR Imaging Based on the Adaptive Subaperture Partition Method in the Terahertz Band

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recommendations! Published in 2018 at "IEEE Transactions on Terahertz Science and Technology"

DOI: 10.1109/tthz.2017.2781462

Abstract: Based on the assumption of isotropic scattering, a wider angle aperture can provide improved resolution of synthetic aperture radar images. However, due to the limited angular persistence of scatterers for high-resolution terahertz radar, traditional imaging… read more here.

Keywords: wide angle; adaptive subaperture; csar; subaperture partition ... See more keywords

Modeling the hydrodynamic impact on the tool influence function during hemispherical subaperture optical polishing.

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recommendations! Published in 2022 at "Applied optics"

DOI: 10.1364/ao.456349

Abstract: To fabricate high-precision and accurate optics relative to the optical design surface, a high level of deterministic control of material removal (i.e., the tool influence function, TIF) during subaperture tool polishing is required. In this… read more here.

Keywords: influence function; tool; tool influence; subaperture ... See more keywords

Polarization grating based circular subaperture stitching interferometer insensitive to vibration and alignment error.

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recommendations! Published in 2025 at "Optics express"

DOI: 10.1364/oe.553881

Abstract: The subaperture stitching interferometry can extend the dynamic range of the interferometer and is widely used for high-resolution measurement of large-aperture, high-slope aspheres. Most subaperture stitching interferometry requires a high-precision multi-axis motion control system and… read more here.

Keywords: subaperture; grating based; subaperture stitching; polarization grating ... See more keywords