Results 1 to 10 of about 5,437,169 (303)

MEO SAR Imaging Based on Imaging Coordinate System Optimization

open access: yesLeida xuebao, 2020
In the Medium-Earth-Orbit Synthetic Aperture Radar (MEO SAR), the curved trajectory and long synthetic aperture time lead to a two-dimensional spatial variation in the signals.
Hang LI   +5 more
doaj   +1 more source

Causal Diffusion Models for Generalized Speech Enhancement

open access: yesIEEE Open Journal of Signal Processing
In this work, we present a causal speech enhancement system that is designed to handle different types of corruptions. This paper is an extended version of our contribution to the “ICASSP 2023 Speech Signal Improvement Challenge”.
Julius Richter   +5 more
doaj   +1 more source

Cooperated Moving Target Detection Approach for PA-FDA Dual-Mode Radar in Range-Ambiguous Clutter

open access: yesRemote Sensing, 2023
This paper proposes a cooperated range ambiguous clutter suppression method for moving target detection in the background of range-ambiguous clutter with a phased array (PA)–frequency diverse array (FDA) dual-mode radar.
Zhixin Liu   +5 more
doaj   +1 more source

PSENet-based efficient scene text detection

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
Text detection is a key technique and plays an important role in computer vision applications, but efficient and precise text detection is still challenging.
Guanglong Liao   +4 more
doaj   +1 more source

MMRGait-1.0: A Radar Time-frequency Spectrogram Dataset for Gait Recognition under Multi-view and Multi-wearing Conditions

open access: yesLeida xuebao, 2023
As a biometric technology, gait recognition is usually considered a retrieval task in real life. However, because of the small scale of the existing radar gait recognition dataset, the current studies mainly focus on classification tasks and only ...
Lan DU   +4 more
doaj   +1 more source

MIMO-Based Forward-Looking SAR Imaging Algorithm and Simulation

open access: yesInternational Journal of Antennas and Propagation, 2014
Multiple-input multiple-output (MIMO) radar imaging can provide higher resolution and better sensitivity and thus can be applied to targets detection, recognition, and tracking.
Ziqiang Meng   +5 more
doaj   +1 more source

Improved range model based on parameter estimation for high resolution and high squint LEO SAR

open access: yesThe Journal of Engineering, 2019
Due to the curve of the LEO synthetic aperture radar (SAR) orbit and the rotation of the earth, the high resolution imaging for LEO SAR is always facing the problem of obtaining accurate range history.
Tong Gu   +3 more
doaj   +1 more source

Snapshot Hyperspectral Imaging With Co-Designed Optics, Color Filter Array, and Unrolled Network

open access: yesIEEE Open Journal of Signal Processing
We propose a novel snapshot hyperspectral imaging method that incorporates co-designed optics, a color filter array (CFA), and an unrolled post-processing network through end-to-end learning.
Ayoung Kim   +3 more
doaj   +1 more source

Property Analysis of MIMO-Based Missile-Borne Forward-Looking SAR

open access: yesInternational Journal of Antennas and Propagation, 2014
As a special multiple-input multiple-output (MIMO) radar networking mode, missile-borne forward-looking synthetic aperture radar (MFL-SAR) has many potential applications. This paper describes and analyzes properties of this new configuration.
Yachao Li   +5 more
doaj   +1 more source

Ground Moving Target Imaging and Analysis for Near-Space Hypersonic Vehicle-Borne Synthetic Aperture Radar System with Squint Angle

open access: yesRemote Sensing, 2018
Near space is the key to integrating “sky„ and “space„ into the future. A synthetic aperture radar (SAR) that works in this area would initiate a technological revolution for remote sensing applications.
Zhanye Chen   +5 more
doaj   +1 more source

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