Results 1 to 10 of about 84,942 (157)

Phase Imbalance Estimation for Azimuth Multi-Channel ScanSAR System [PDF]

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The new concept of combining the azimuth multichannel synthetic aperture radar (SAR) system with the Scan mode was put forward to meet the requirements of future developments in high-resolution and ultrawide-swath SAR design. However, the phase imbalance
Junying Yang   +4 more
doaj   +3 more sources

A Channel Imbalance Calibration Scheme with Distributed Targets for Circular Quad-Polarization SAR with Reciprocal Crosstalk

open access: yesRemote Sensing, 2023
As polarimetric antennas can be isolated through excellent electronic frameworks in circular quad-polarization (CQP) synthetic aperture radar (SAR) systems, cross-polarization (x-pol) and co-polarization (co-pol) channel imbalances are more challenging ...
Xingjie Zhao   +3 more
doaj   +3 more sources

Mutual Coupling and Channel Imbalance Calibration of Colocated MIMO Radars

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
The Multiple-Input Multiple-Output (MIMO) radar combines the signals from multiple transmit and receive elements separately to form a virtual array. Consequently, system imperfections in the MIMO radar caused by channel imbalance and mutual coupling are ...
Ricard L. Grove   +2 more
doaj   +2 more sources

A Unified Algorithm for Channel Imbalance and Antenna Phase Center Position Calibration of a Single-Pass Multi-Baseline TomoSAR System

open access: yesRemote Sensing, 2018
The multi-baseline synthetic aperture radar (SAR) tomography (TomoSAR) system is employed in such applications as disaster remote sensing, urban 3-D reconstruction, and forest carbon storage estimation.
Yuncheng Bu   +4 more
doaj   +3 more sources

Channel Imbalance Calibration Based on the Zero Helix of Bragg-like Targets

open access: yesRemote Sensing, 2023
The calibration of channel imbalances is currently the main concern in polarimetric calibration (POLCAL) since the crosstalk of recent polarimetric synthetic aperture radar (Pol-SAR) systems is lower than −20 dB.
Hanglan Guo   +3 more
doaj   +2 more sources

A Novel Polarimetric Channel Imbalance Phase Estimation Method Based on the Rotated Double-Bounce Backscatters in Urban Areas

open access: yesRemote Sensing, 2022
Polarization calibration without artificial calibrators has been one of the focuses of research and discussion for PolSAR communities. However, there is limited research on the treatment of dual-polarization systems and the calibration methods for ...
Songtao Shangguan   +4 more
doaj   +3 more sources

Channeling Fairness: Class Imbalance-Aware Skin Disease Recognition via Fair Channel Enhancement Module

open access: yesIEEE Access
Skin disease classification presents significant challenges due to class imbalance, low inter-class variability, and high intra-class variation present in most clinical image datasets. To address these issues, we propose Fair Channel Enhancement (FCE), a
Joseph Thomas Ano   +1 more
doaj   +3 more sources

Efficient Calibration of Colocated MIMO Radar

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
Measurement-based calibration with a complete MIMO radar system is beneficial due to all imperfections being considered simultaneously. However, if high performance is needed, the number of required calibration measurements escalates with an increasing ...
Ricard L. Grove, Jorgen Dall
doaj   +1 more source

A Computationally Efficient Hybrid Framework for Polarimetric Calibration of Quad‐Pol SAR Data

open access: yesEarth and Space Science, 2021
Polarimetric Synthetic Aperture Radar (PolSAR) calibration is an essential preprocessing step that must be performed to ensure that the data quality is adequate. This, in turn, helps to minimize the propagation of errors in any further data processing or
Abhisek Maiti   +3 more
doaj   +1 more source

Imbalance measure and proactive channel rebalancing algorithm for the Lightning Network [PDF]

open access: yes2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC), 2020
8 Pages + references.
Rene Pickhardt, Mariusz Nowostawski
openaire   +3 more sources

Home - About - Disclaimer - Privacy