Results 1 to 10 of about 449,844 (282)

A Novel Joint Motion Compensation Algorithm for ISAR Imaging Based on Entropy Minimization [PDF]

open access: yesSensors
Space targets move in orbit at a very high speed, so in order to obtain high-quality imaging, high-speed motion compensation (HSMC) and translational motion compensation (TMC) are required.
Jishun Li   +5 more
doaj   +2 more sources

Motion Compensation on DCT Domain [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2001
Alternative fully DCT-based video codec architectures have been proposed in the past to address the shortcomings of the conventional hybrid motion compensated DCT video codec structures traditionally chosen as the basis of implementation of standard ...
Liu KJ Ray, Koc Ut-Va
doaj   +2 more sources

A Motion Compensation Method for Shipborne HFSWR by Using Dual Reference RF Signals Generated Onshore

open access: yesRemote Sensing, 2022
The echo of shipborne high-frequency surface wave radar (HFSWR) is modulated by six-degrees-of-freedom (6-DOF) motion, affecting the detection of the target and the remote sensing of ocean surface dynamics parameters.
Maorong Chen   +6 more
doaj   +1 more source

Prediction and Compensation Model of Longitudinal and Lateral Deck Motion for Automatic Landing Guidance System

open access: yesMathematics, 2022
This paper mainly studies the longitudinal and lateral deck motion compensation technology. In order to ensure the safe landing of the carrier-based aircrafts on the flight decks of carriers during the landing process, it is necessary to introduce deck ...
Chen Cheng   +4 more
doaj   +1 more source

Joint ISAR imaging and azimuth scaling under low SNR using parameterized compensation and calibration method with entropy minimum criterion

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
In general, the method of conventional motion compensation for inverse synthetic aperture radar (ISAR) imaging is divided into translational motion compensation (TMC) and rotational motion compensation (RMC) in sequence.
Tingting He   +5 more
doaj   +1 more source

Modeling and simulation analysis of active heave compensation control system for electric-driven marine winch under excitation of irregular waves

open access: yesMeasurement + Control, 2023
The six-degree-of-freedom (6 DOF) motion of the mother-ship, which is caused by wave fluctuation, makes offshore operations difficult. To solve this problem, various heave compensation systems were proposed, as well as the law of wave motion. These heave
Tiancai Xie   +3 more
doaj   +1 more source

Motion compensated projection reconstruction [PDF]

open access: yesMagnetic Resonance in Medicine, 1999
Over recent years, MRI has shown the capability for real-time applications. Although the acquisition times of fast MRI methods have been reduced significantly, patient motion during a magnetic resonance imaging (MRI) examination still causes artifacts in the image.
T, Schäffter, V, Rasche, I C, Carlsen
openaire   +2 more sources

Noise-Robust ISAR Translational Motion Compensation via HLPT-GSCFT

open access: yesRemote Sensing, 2022
Translational motion compensation is a prerequisite of inverse synthetic aperture radar (ISAR) imaging. Translational motion compensation for datasets with low signal-to-noise ratio (SNR) is important but challenging.
Fengkai Liu   +3 more
doaj   +1 more source

Media resources in video information systems [PDF]

open access: yesE3S Web of Conferences, 2023
The article describes methods for increasing the contrast of images in video information systems, the main compression of the video stream is provided by eliminating inter-frame redundancy using methods for compensating the movement of image fragments of
Beknazarova Saida   +2 more
doaj   +1 more source

Vessel Target Echo Characteristics and Motion Compensation for Shipborne HFSWR under Non-Uniform Linear Motion

open access: yesRemote Sensing, 2021
For shipborne high-frequency surface wave radar (HFSWR), the movement of the ship has a great impact on the radar echo, thus affecting target detection performance.
Yonggang Ji   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy