A5054836635- Advanced SAR Imaging Techniques
- Augmented Reality Applications
- Electromagnetic Scattering and Analysis
- Surgical Simulation and Training
- Aerospace and Aviation Technology
- Radar Systems and Signal Processing
- Robotics and Sensor-Based Localization
- Radio Wave Propagation Studies
- Soft Robotics and Applications
- Medical Imaging and Analysis
- Lung Cancer Diagnosis and Treatment
- Computational Fluid Dynamics and Aerodynamics
- Radiative Heat Transfer Studies
- Advanced Radiotherapy Techniques
- Guidance and Control Systems
- Aerodynamics and Fluid Dynamics Research
- Antenna Design and Optimization
- Ship Hydrodynamics and Maneuverability
- Engineering Applied Research
- Infrared Target Detection Methodologies
- Calibration and Measurement Techniques
- Advanced Aircraft Design and Technologies
- Aerospace Engineering and Energy Systems
- Advanced Antenna and Metasurface Technologies
- Radiomics and Machine Learning in Medical Imaging
Tianjin University
2018-2025
Beihang University
2017-2025
China University of Mining and Technology
2024
Robert Bosch (Germany)
2020
Weatherford College
2020
Northrop Grumman (United States)
2011-2015
Tsinghua University
2004
This paper describes the development of silicon micromachined waveguide structures operating in WR1.5 band (500-750 GHz). Average loss 0.15 dB/mm was measured at 600 GHz. Capabilities proposed approach have been shown with a 570-GHz three-pole bandpass filter that has 0.9-dB passband and Y-junction coupler 670 These components tested using novel on-wafer testing method for rapid characterization throughput. A batch process integration solid-state devices also developed. Further this...
In this letter, the first packaged THz solid-state amplifier operating at 0.85 is reported. The InP HEMT achieves a noise figure as low 11.1 dB with an associated gain of 13.6 using high <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${\bf f}_{\bf MAX}$</tex></formula> transistors in 10-stage coplanar waveguide integrated circuit. Output power up to 0.93 mW measured.
Abstract In this study, we present deep learning‐based approaches to automatic segmentation and applicator reconstruction with high accuracy efficiency in the planning computed tomography (CT) for cervical cancer brachytherapy (BT). A novel three‐dimensional (3D) convolutional neural network (CNN) architecture was proposed referred as DSD‐UNET. The dataset of 91 patients received CT‐based BT used train test DSD‐UNET model auto‐segmentation high‐risk clinical target volume (HR‐CTV) organs at...
The hybrid CNN-transformer structures harness the global contextualization of transformers with local feature acuity CNNs, propelling medical image segmentation to next level. However, majority research has focused on design and composition structures, neglecting data structure, which enhance performance, optimize resource efficiency, bolster model generalization interpretability. In this work, we propose a data-oriented octree inverse hierarchical order aggregation transformer-CNN...
The number of patients who suffer from glioma has been increasing, and this malignancy is a serious threat to human health. mainstream treatment for surgical resection; therefore, accurate resection can improve postoperative patient recovery.Many studies have investigated navigation guided by mixed reality, with good outcomes. However, the limitations such as spatial drift caused environmental changes, limit its clinical application. Therefore, we present reality system resection....
This paper presents a model identification of micro air vehicle in loitering flight, based on the input-output data collected from flight experiments homemade 1-m-sized aircraft. A miniature flight-control system, which consists onboard and ground sections, is equipped with multichannel logger associated acquisition software. Modeling performance analysis are carried out, flight-test using system technique. Two fourth-order autoregressive exogenous input (ARX) models identified to present...
ABSTRACT Intraoperative ultrasound (iUS) has been widely used in recent years to track intraoperative brain tissue deformation. Outlining tumor boundaries on iUS not only facilitates the robustness and accuracy of shift correction but also enables direct use information for neurosurgical navigation. We developed a semisupervised cross nnU‐Net with depthwise separable convolution (SSC nnSU‐Net) real‐time segmentation 3D images by two networks different initialization consistent network...
Abstract Objective:&#xD;This study proposes a real-time tumor position prediction-based multi-dimensional respiratory motion compensation puncture method to accurately track lung tumors and achieve precise needle puncture.&#xD;Approach:&#xD;A hybrid model framework integrating prediction correlation models is developed enable localization. A Long Short-Term Memory neural network with bidirectional attention modules (Bi-LSTM-ATT) employed for predicting external signals....
To study the electromagnetic scattering characteristics of a V-shaped deformation quadrotor, calculation approach is presented to determine dynamic radar cross section (RCS). The rotation single/multi-rotor, opening support arm and fuselage are dynamically simulated. Physical optics physical theory diffraction used calculate target RCS. results show that when undeformed, presence strong sources such as arms, rotor towers, hubs allows for an instantaneous peak 13.08 dBm 2 under given forward...
To study the influence of speed brake deflection on remote sensing grayscale images and radar cross section (RCS) aircraft, we present a comprehensive method based modeling dynamic electromagnetic scattering. The results indicate that from ground can capture hierarchical information various reference objects water bodies. When target aircraft enters observation area, complex may blur features brake. RCS shows strong characteristics under example forward azimuth, where maximum variation reach...
Purpose An accurate position of the needle is vitally important in low‐dose‐rate seed implantation brachytherapy. Our paper aims to implement a mixed reality navigation system assist with placement I 125 thoracoabdominal tumor brachytherapy and validate accuracy quality this type method. Methods With surgical system, based on through novel modified multi‐information fusion method, virtual organs preoperative plan for real patient tracking tools time were achieved. Personalized image...
Study Design. Prospective observational study. Objective. This article aims to develop a spatial augmented reality-based surgical navigation system assist in the placement of pedicle screws minimally invasive spine surgery and verify accuracy this method. Summary Background Data. Due their high good visualization ability, reality systems have been used surgeries. However, does not allow information be shared restricts doctors. Methods. A that implements based on projector can realize...
With the continuous improvement and development of armed helicopters, research on their stealth characteristics has become more in depth. In order to obtain complex effect caused by high-speed rotation rotor-like components, a dynamic scattering method (DSM) is presented. Rotation speed, azimuth, elevation angle, pitching rolling angle are studied discussed detail. The results show that electromagnetic main rotor tail periodic. This period characteristic related speed attitude rotor. radar...