A5100731637- Underwater Acoustics Research
- Satellite Image Processing and Photogrammetry
- Robotics and Sensor-Based Localization
- 3D Surveying and Cultural Heritage
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Advanced Control Systems Design
- Ultrasonics and Acoustic Wave Propagation
- Underwater Vehicles and Communication Systems
- Acoustic Wave Phenomena Research
- Infrared Target Detection Methodologies
- Optical measurement and interference techniques
- Remote Sensing and LiDAR Applications
- Advanced Vision and Imaging
- Advanced Measurement and Detection Methods
- Random lasers and scattering media
- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Advanced Image Fusion Techniques
- Land Use and Ecosystem Services
- Antenna Design and Optimization
- Video Surveillance and Tracking Methods
- Geophysics and Gravity Measurements
- Extremum Seeking Control Systems
- Microwave Engineering and Waveguides
- Advanced Semiconductor Detectors and Materials
Tongji University
2016-2025
Zhejiang Center for Disease Control and Prevention
2014-2024
Fudan University
2002-2024
Huashan Hospital
2024
National University of Singapore
2005-2024
Southwest University of Science and Technology
2022
Shanghai Electric (China)
2021
Technical University of Munich
2020
Tsinghua University
2007-2014
Shanxi University of Traditional Chinese Medicine
2013
Attitude jitter is a common phenomenon in the application of high resolution satellites, which may result large errors geo-positioning and mapping accuracy. Therefore, it critical to detect compensate attitude explore full geometric potential satellites. In this paper, framework detection compensation for satellites proposed some preliminary investigation performed. Three methods are presented as follows. (1) The first one based on multispectral images using parallax between two different...
Platform oscillation is a crucial error source that undermines the geometric performance of satellite imagery. In this paper, an approach for detection utilizes parallax observation between multispectral bands proposed. Due to configuration sensors, attitude ZY-3 can be detected and estimated by disparities adjacent band images. The are obtained through high-accuracy image matching method based on phase correlation at subpixel level. pixel displacements caused then retrieved from use two...
Abstract. Advancements in scientific inquiry and practical applications have created a higher demand for the accuracy of global digital elevation models (GDEMs), especially GDEMs whose main data source is optical imagery. To address this challenge, integrating GDEM satellite laser altimeter (global coverage high-accuracy ranging) an important research direction, addition to technological enhancement source. In paper, we describe datasets algorithms used generate product (IC2-GDEM) by...
ABSTRACT Background A minimally invasive spherical osteotomy assistant system (MISOS) based on a multi‐axis surgical robot was designed to improve the control and precision of manual osteotomy. Methods Based human sawbone models, feasibility MISOS verified by comparing centre deviation section curvature acetabulum, femur, tibia. Results Compared with freehand osteotomy, demonstrated superior for acetabulum (1.48 ± 0.93 vs. 11.15 3.97 mm), femur (3.12 0.75 8.81 3.04 tibia (1.91 0.84 7.33 1.53...
To examine the association between depression and impaired glucose regulation, newly diagnosed diabetes previously in middle-aged elderly Chinese people, whether was associated with different treatment regimens or durations of diabetes.A cross-sectional study performed among 229,047 adults living community aged ≥ 40 years from 25 centres China. The self-reported rating scale Patient Health Questionnaire 9 (PHQ-9) used to diagnose probable sub-threshold depression. Glucose metabolism status...
Compared with traditional manned airborne photogrammetry, unmanned aerial vehicle remote sensing (UAVRS) has the advantages of lower cost and higher flexibility in data acquisition. It has, therefore, found various applications fields such as three-dimensional (3D) mapping, emergency management, so on. However, due to instability UAVRS platforms low accuracy onboard exterior orientation (EO) observations, use direct georeferencing image leads large location errors. Light detection ranging...
Abstract Aims Few studies have analysed the effect of sleep duration and snoring on hypertension glycaemic control in patients with diabetes. This study aims to investigate relationship prevalent people Methods In baseline survey REACTION study, 56 032 diabetes were categorized into four groups according self‐reported duration: < 6, 6–7.9, 8–8.9 ≥ 9 h. Snoring frequency was evaluated as ‘usually’, ‘occasionally’ or ‘never’. Hypertension assessed by systolic blood pressure, diastolic...
Satellite platform vibration induced by the onboard dynamic components and exterior perturbation deteriorates stability causes attitude jitter, resulting in image distortion geometric accuracy degradation. This paper presents an jitter detection method based on images dense ground controls, which requires neither high-performance measurement devices nor specific sensor configuration like parallax observation. Attitude variations will result space discrepancies at control points, from can be...
As the accuracy of satellite laser altimetry is susceptible to real-time atmospheric conditions, with-in footprint topography fluctuation, and detector noise, etc., we proposed a method by comprehensively analyzing ranging error evaluation labels extract high-accuracy elevation control points that suitable for imagery based topographic mapping applications. Using ICESat data, global high dataset including more than 60 million points, on model waveform quality analysis paper. For land areas,...
High-resolution satellite images (HRSIs) obtained from linear array charge-coupled device sensors always suffer geometric instability in the presence of attitude jitter. Therefore, detection and compensation spacecraft jitter both cross-track along-track directions are crucial to improve accuracy HRSIs. A number reports have been made on estimation However, direction is more complicated due impact topographic change. This paper presents a novel approach achieve accurate by eliminating...
Abstract The monitoring of a progressive collapse test structure model has always been technical issue in civil engineering. This paper proposes novel videogrammetric approach to monitor single‐layer lattice shell, which consists three main parts: A videogrammetry system with six high‐speed cameras is established measure the morphological changes shell. specific artificial target designed and experimentally tested obtain location every node centre on 3D displacements centres can be...
In this letter, an improved phase correlation (PC) method based on 2-D plane fitting and the maximum kernel density estimator (MKDE) is proposed, which combines idea of Stone's robust MKDE. The proposed PC first utilizes a vector filter to minimize noise errors angle matrix then unwraps filtered by use minimum cost network flow unwrapping algorithm. Afterward, unwrapped robustly fitted via MKDE, slope coefficients indicate subpixel shifts between images. experiments revealed that can...
Incorporating spatial nonstationarity in urban models is essential to accurately capture its spatiotemporal dynamics. Spatially-varying coefficient methods, e.g. geographically weighted regression (GWR) and the Bayesian spatially-varying (BSVC) model, can reflect nonstationarity. However, GWR possess weak ability eliminating negative effects of non-constant variance because method sensitive data outliers bandwidth selection. We proposed a new cellular automata (CA) approach based on BSVC for...
The distorted wave Born approximation (DWBA) method has been successfully used in modeling the acoustic backscattering by weakly scattering zooplankton [Stanton et al., J. Acoust. Soc. Am. 94, 3463–3472 (1993), Wiebe IEEE Ocean. Eng. 22(3), 445–464 (1997)]. However, previously developed DWBA model ignores imaginary part of amplitude and thus results a zero-extinction cross section. As consequence, fails to predict scattering-induced attenuation which could be important under certain...