- Advanced SAR Imaging Techniques
- Microwave Imaging and Scattering Analysis
- Non-Invasive Vital Sign Monitoring
- Antenna Design and Optimization
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Microfluidic and Capillary Electrophoresis Applications
- Optical Systems and Laser Technology
- Gait Recognition and Analysis
- Lignin and Wood Chemistry
- Photopolymerization techniques and applications
- Satellite Communication Systems
- Hemodynamic Monitoring and Therapy
- Radar Systems and Signal Processing
- Muscle activation and electromyography studies
- Lower Extremity Biomechanics and Pathologies
- Indoor and Outdoor Localization Technologies
- Microwave Engineering and Waveguides
- Wireless Body Area Networks
- Biosensors and Analytical Detection
- ECG Monitoring and Analysis
- Balance, Gait, and Falls Prevention
- UAV Applications and Optimization
- Radio Wave Propagation Studies
- Healthcare Technology and Patient Monitoring
- Augmented Reality Applications
PLA Army Engineering University
2019-2025
Hainan University
2018-2024
National University of Defense Technology
2019-2024
Southwest Forestry University
2024
University of Electronic Science and Technology of China
2023
China Academy of Space Technology
2011-2021
Central South University
2018
Air Force Engineering University
2018
Naval Aeronautical and Astronautical University
2017
Shenzhen University
2011-2015
Radar-based non-contact vital signs monitoring has great value in through-wall detection applications. This paper presents the theoretical and experimental study of respiration heartbeat pattern extraction from multiple subjects. To detect subjects, we employ a low-frequency ultra-wideband (UWB) multiple-input multiple-output (MIMO) imaging radar derive relationship between images vibrations caused by human cardiopulmonary movements. The derivation indicates that MIMO with stepped-frequency...
Pennation angle (PA) is an important property of human skeletal muscle that plays a significant role in determining the force contribution fascicles to movement. Two-dimensional (2D) ultrasonography most common approach measure PA. However, principle, it challenging infer knowledge three-dimensional (3D) architecture from 2D assessment. Furthermore, architectural complexity and variation impose more difficulties on reliable consistent quantification Thus, purpose our study provide accurate...
Contactless physiological signal sensing is an emerging technology for routine health monitoring, ambient-assisted living, automotive, search and rescue, public security. In this work, we propose MetaPhys, a reconfigurable intelligent surface (RIS)-based contactless monitoring system that can simultaneously sense multiple persons their respiratory cardiac signals. The proposed localizes the human targets by utilizing RIS to dynamically manipulate electromagnetic waves in environment...
At present, many countries in the world have been gradually building LEO satellite constellation. satellite, with its characteristics of small delay and large coverage, provides a possible solution for full coverage ground communication network. This paper implementation IOT system analyzes development status puts forward architecture characteristics, so as to provide solutions research directions in-depth study satellite.
Infrared small target detection (ISTD) plays a crucial role in precision guidance, anti-missile interception, and military early-warning systems. Existing approaches suffer from high false alarm rates low when detecting dim targets complex scenes. A robust scheme for automatically infrared is proposed to address this problem. First, gradient weighting technique with sensitivity was used extracting candidates. Second, new collection of features based on local convergence index (LCI) filters...
Quantitative PCR (qPCR) has been widely used for the detection and monitoring of a variety infectious diseases. CE were integrated into microfluidic chip that was designed to achieve rapid real-time amplicon sampling, separation, quantitation without requiring various probes. A novel design allows overlapped execution CE, minimizing time required analysis after each cycle. The performance on-chip qPCR method demonstrated using 45-minutes model assay protocol phiX174 bacteriophage,...
Radar-based noncontact physiological signals monitoring is meaningful for daily health monitoring, post-disaster rescue, and public security. This paper focuses on the theoretical experimental study of respiratory cardiac motion separation by remote sensing using a four-dimensional (4D) imaging radar. To adaptively separate patterns, we propose variational mode (VMS) algorithm. VMS established optimizing problem to different modes. It minimizes energy overlap heartbeat respiration as well...
Surgical procedures are traditionally performed by two or more surgeons along with staff nurses. One surgeon serves as the primary and other his/her assistant. robotics have redefined dynamics in which interact each surgical site. Raven IV is a new generation of robot system having four articulated robotic arms spherical configuration, holding an tool. The allows to teleoperate collaboratively from remote sites. current research effort aims configure link architecture arm, position (port...
Measuring vital signs (VS) contained in the echoes is crucial to analyses of breathing and heartbeat signals using medical radar. Although many advanced signal processing algorithms have been developed for radar-based VS measurement make some improved progress, existing schemes cannot achieve a good estimation echo phases modulated by respiratory cardiac activities with high accuracy or low computation, thus resulting serious performance degradation on subsequent separation patterns as well...
Gait recognition and analysis is one of the most important biometric methods for medical treatments, virtual reality games human motion identification. based on wearable MEMS inertial sensors proposed rehabilitation with Physical Activities Healthcare System (PATHS) in this paper. We use relative wavelet energy as features support vector machine (SVM) algorithm to discriminate walking pattern from other patterns. This method has been proven capable distinguishing gait regular physical...
It is of great importance to remotely sense trapped victims with radio signals in modern search and rescue after natural disasters like earthquakes, avalanches, building collapses, so on. Various sensors have been developed date; however, they are hardly deployed recognize efficiently the vital sign long-distance, deep-coverage, multi-subject situations because back-scattered victim-critical really weak nearly drowned ambient nonstationary noise clutter. To tackle formidable difficulty, we...
Using a multiple-input-multiple-output (MIMO) radar for environment sensing is gaining more attention in unmanned ground vehicles (UGV). During the movement of UGV, position MIMO array compared to ideal imaging will inevitably change. Although compressed (CS) can provide high resolution results and reduce complexity system, inaccurate elements lead defocusing imaging. In this paper, method proposed realize motion error compensation sparse simultaneously. It utilizes block coordinate descent...
This paper focuses on the time-variant radio frequency interference (RFI) issue that ultra-wide band (UWB) through-wall radar (TWR) is faced with, and presents an iterative dual sparse recovery (IDSR) framework to combat it. The consists of two stages: 1) RFI estimation detection 2) IDSR scattered echoes from objects signals. In first stage, overlapped short time Fourier transform employed construct update discrete Doppler spectrum (DFDS). Then, a minimum statistic operation conducted DFDS...
摘要: 在超宽带雷达成像中,雷达图像存在非正交旁瓣,影响图像质量。该文通过分析虚拟孔径成像的空间谱支撑区分布与点扩展函数的关系,提出一种基于虚拟子孔径的雷达图像非正交旁瓣抑制方法。该方法通过分离主瓣和旁瓣,在保持分辨率的同时有效抑制旁瓣,仿真数据处理结果验证了该文方法的有效性。 关键词: 雷达成像 / 超宽带 旁瓣抑制 空间谱 支撑区
Considering the sparseness of scatterers in scene a synthetic aperture radar (SAR) image, we propose modified model for SAR images with enhanced features by automatically choosing variable lk-norm and regularization parameter. The approach is based on regularized reconstruction scattering field, which employs prior information region interest. It leads to an alternating iterative algorithm modeling. method constructed Here, k function imaged it could be estimated during iteration process...
As increasing of small space objects in low earth orbit, more and three-dimensional radars are adopted for surveillance. In the form radial velocity acceleration, Doppler characteristics LEO object which essential detection studied. Based on orbit inclination position, a new algorithm to estimate is proposed. Key factors affect estimation precision performances analyzed. The rationality validated by simulation test.
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This paper presents two new, simple yet effective approaches to measure the vibration of a swaying millimeter-wave radar (mmRadar) utilizing geometrical information. Specifically, for planar vibrations, we firstly establish an equation based on area difference between mmRadar and reference objects at different moments, which enables quantification displacement. Secondly, volume differences are also utilized with same idea, achieving self-vibration measurement spatial vibrations. Experimental...