Results 1 to 10 of about 57,555 (161)

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

Remote 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, Jiong Niu, Ming Li, Ling Zhang, Yonggang Ji, Wenxiang Wan, Q. M. Jonathan Wu   +6 more
doaj   +3 more sources

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

Sensors
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, Yasheng Zhang, Canbin Yin, Can Xu, Pengju Li, Jun He   +5 more
doaj   +2 more sources

Motion Compensation on DCT Domain [PDF]

EURASIP 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

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

Remote 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, Yiming Wang, Weimin Huang, Weifeng Sun, Jie Zhang, Ming Li, Xiaoyu Cheng   +6 more
doaj   +3 more sources

Motion Parameter Identification and Motion Compensation for Shipborne HFSWR by Using the Reference RF Signal Generated at the Shore

Remote Sensing, 2020
The shipborne high-frequency surface wave radar (HFSWR) platform produces six degrees of freedom (DOF) motion at sea, which affects the performance of radar target detection and remote sensing of ocean surface dynamics parameters. Motion compensation can
Di Zhu, Jiong Niu, Ming Li, Ling Zhang, Yonggang Ji, Q. M. Jonathan Wu   +5 more
doaj   +3 more sources

Research on the Motion Error Analysis and Compensation Strategy of the Delta Robot

Mathematics, 2019
The Delta robots are widely used in packaging, sorting, precision positioning, and other fields. Motion accuracy is an important indicator for evaluating robot performance.
Deyong Shang, Yu Li, Yue Liu, Shuanwei Cui   +3 more
doaj   +3 more sources

Motion Compensation for 3D Multispectral Handheld Photoacoustic Imaging [PDF]

Biosensors, 2022
Chulhong Kim, Changyeop Lee, Chiho Yoon   +2 more
exaly   +2 more sources

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

Mathematics, 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, Zian Wang, Zheng Gong, Pengcheng Cai, Chengxi Zhang   +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

EURASIP 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, Biao Tian, Yu Wang, Shuai Li, Shiyou Xu, Zengping Chen   +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

Measurement + 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, Liangpei Huang, Yong Guo, Yun Ou   +3 more
doaj   +1 more source