Results 231 to 240 of about 3,144,647 (278)

Estimation of parameters of the moving target with micro motion in geosar

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
In order to solve the parameters estimation problem caused by the moving target with the micro motion in the GEOSAR model, a technique based on time-frequency distribution and least squares estimation is introduced. The model of micro-motion part can be seen as a narrow band stochastic process, which is close to the reality of the motion. The method is
Jindong Yu, Ze Yu 0002, Chunsheng Li, Jingwen Li 0003, Mingxuan Mei   +4 more
openaire   +1 more source

Motion Matters: Motion-guided Modulation Network for Skeleton-based Micro-Action Recognition

ACM Multimedia
Micro-Actions (MAs) are an important form of non-verbal communication in social interactions, with potential applications in human emotional analysis. However, existing methods in Micro-Action Recognition often overlook the inherent subtle changes in MAs,
Jihao Gu, Kun Li, Fei Wang, Yanyan Wei, Zhiliang Wu, Hehe Fan, Meng Wang   +6 more
semanticscholar   +1 more source

UWB pulse radar for micro-motion detection

2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS), 2016
This paper presents a micro-motion detection based on coherent ultra-wide band pulse radar, in the context of improving the general imaging pipeline of through-the-wall radar. The proposed micro-motion detection principle is based on the measurement of the phase difference of the UWB carrier waveform between the transmitted and the received pulse ...
Vincent Merelle, Alain Gaugue, Georges Louis, Michel Menard   +3 more
openaire   +1 more source

Optimum design of a parallel micro-motion stage

SPIE Proceedings, 2006
With the development of a parallel micro motion stage, a Pseudo-Rigid-Body model is derived, and simplified as a constant Jacobian matrix, an optimization based on condition number is then made to establish structure parameters, so as to achieve kinematic performance of both workspace and resulotion as demand, while the scale of this stage is ...
Kunpeng Song, Penghao Hu, Wei Wang, Qun Zheng   +3 more
openaire   +1 more source

Micro-motion Analysis Based on HRRP Sequence

IET International Radar Conference 2013, 2013
Since micro-motion of a target will affect the positions and phases of scatters in high resolution range profiler (HRRP), the methods of micro-motion extraction from the signals of range gates cannot be used. According to the variation features of scatter position, we treat the HRRPs as image sequence and an improved Viterbi algorithm is used to track ...
null Chen Da-qing, null Xie Su-dao, null Zhang Zhe, null Wang Rong-chen   +3 more
openaire   +1 more source

Classification of Space Targets with Micro-motion Based on Deep CNN

IEEE International Conference on Electronic Information and Communication Technology, 2019
There exist a variety of micro-motions in space targets, including nutation, precession and spinning. Accurate acquisition of the micro-motion form is a prerequisite for estimating motion and structure parameters of ballistic targets. Firstly, we analyze
Yizhe Wang, C. Feng, Yongshun Zhang, Qichao Ge   +3 more
semanticscholar   +1 more source

Design of a stiffness-adjustable micro-motion stage

2019 IEEE 9th Annual International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), 2019
The manufacturing errors of flexure hinge are accumulated in their operation, which is not conducive to the control of the motion stage and the high manufacturing accuracy leads to high costs. Therefore, a novel micro-motion stage with adjustable stiffness is proposed to ensure that the motion stage has better performance at low cost.
Rui-Qi Li, Bai-Sheng Wu, Zhi-Jun Yang
openaire   +1 more source

Analysis of micro-motion model for radar target

2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2017
The mechanical dynamics in addition to its bulk translation of the target or any structure on the target is called micro-motion. Micro-motion evokes a frequency modulation in radar echo known as micro-Doppler (m-D) effect which may help to detect specific structures of a target with micro-motion, leading a potential way to realize target identification
Wenchao Li, Boli Xiong, Gangyao Kuang
openaire   +1 more source

Micro-motion Parameters Estimation Using Randomized Stepped Frequency Radar

International Radar Conference, 2019
This paper deals with the micro-motion parameter estimation of ballistic targets. In the proposed method, the Randomized Stepped Frequency (RSF) radar waveform is applied to provide high resolution of both range and velocity at the same time, which makes
Chuncheng Zhao, Yimin Liu, Tianyao Huang, Lei Wang, Huaiying Tan   +4 more
semanticscholar   +1 more source

Research on Human Micro-motion Feature Extraction Technology

IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, 2019
Micro-Doppler features are unique features of moving targets and can provide a basis for target recognition. Human micro-motion research is a new technology developed in recent years. The signal processing means can extract the Doppler shift of the swing
Pan Zhang, Wenke Xie, Jianping Ou, Jun Zhang, Kai Liu, Guofan Wang   +5 more
semanticscholar   +1 more source