Results 11 to 20 of about 1,475,822 (289)
Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingPolarimetric calibration is crucial to ensure the accuracy and reliability of subsequent application results. Since Gaofen-3(GF-3) has been providing polarimetric Synthetic Aperture Radar images for six years, it is necessary to monitor the polarimetric ...
Hanglan Guo +3 more
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Correction of Channel Imbalance for MIMO SAR Using Stepped-Frequency Chirps [PDF]
International Journal of Antennas and Propagation, 2014 To simultaneously achieve two-dimensional high resolution and wide swath in synthetic aperture radar (SAR), azimuth MIMO structure combined with stepped-frequency chirp signals was developed via splitting the antenna into N subapertures.
Xiulian Luo +4 more
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IQ Imbalance in Multiuser Systems: Channel Estimation and Compensation [PDF]
IEEE Transactions on Communications, 2016 In this paper, we consider the uplink of a single-cell multi-user single-input multiple-output (MU-SIMO) system with in-phase and quadrature-phase imbalance (IQI). In particular, we investigate the effect of receive (RX) IQI on the performance of MU-SIMO systems with large antenna arrays employing maximum-ratio combining receivers.
Nikolaos Kolomvakis +2 more
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Remote Sensing, 2023 Azimuth multichannel (AMC) technology is one of the mainstream technical approaches to realize high-resolution wide-swath (HRWS) imaging. It has been successfully applied to several synthetic aperture radar (SAR) satellites in orbit.
Zongxiang Xu +6 more
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Remote Sensing, 2022 High-resolution wind vector is important to investigate local winds’ variability over the global ocean. Quad-polarization Synthetic Aperture Radar (SAR) can provide wind vector independently without any external wind direction inputs.
Xiaochen Wang +5 more
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A Bragg-Like Point Extraction Method for Co-polarization Channel Imbalance Calibration
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Calibration by distributed targets is an important part of polarimetric calibration (PolCAL) without corner reflectors (CRs). Currently, both the correlation of HH and VV ($R_{\text{hhvv}}$) and the equivalent number of looks (ENL) constitute the common ...
Xingjie Zhao +5 more
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Compensation of Phase Noise and IQ Imbalance in Multi-Carrier Systems
IEEE Access, 2020 Compensation for the impacts of phase noise (PN) and in-phase and quadrature (IQ) imbalance on cyclic-prefix (CP) based multi-carrier modulation systems in the presence of imperfect channel estimation is considered in this paper.
Long D. Le, Ha H. Nguyen
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Electrophysiological characterization of schizophrenia-associated variants in NaV1.2 sodium channel
European Psychiatry, 2022 Introduction A major pathophysiological hypothesis of schizophrenia states an increased activity of glutamatergic neurons leading to an imbalance of neural excitation and inhibition (E/I-imbalance).
M. Suslova +3 more
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Ion Channels and Bone Homeostasis Imbalance [PDF]
Biomedical Journal of Scientific & Technical Research, 2019 The human bone environment undergoes remodeling through bone formation and bone resorption throughout life to maintain bone homeostasis [1].
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A Quality Assessment Method Based on Common Distributed Targets for GF-3 Polarimetric SAR Data
Sensors, 2018 The GaoFen-3 (GF-3) satellite, launched on 10 August 2016, is the first C-band polarimetric synthetic aperture radar (PolSAR) satellite in China. The PolSAR system of GF-3 can collect a significant wealth of information for geophysical research and ...
Sha Jiang +3 more
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