A5100462180- Radio Wave Propagation Studies
- Precipitation Measurement and Analysis
- Millimeter-Wave Propagation and Modeling
- Inertial Sensor and Navigation
- Structural Behavior of Reinforced Concrete
- GNSS positioning and interference
- Structural Load-Bearing Analysis
- Robotics and Sensor-Based Localization
- Underwater Vehicles and Communication Systems
- Concrete Corrosion and Durability
- Advanced Computational Techniques and Applications
- Robotic Path Planning Algorithms
- Target Tracking and Data Fusion in Sensor Networks
- Natural Fiber Reinforced Composites
- Satellite Communication Systems
- Advanced Research in Science and Engineering
- Geoscience and Mining Technology
- Radio Frequency Integrated Circuit Design
- Sustainable Industrial Ecology
- Thin-Film Transistor Technologies
- Fire effects on concrete materials
- Advanced Algorithms and Applications
- Organic Light-Emitting Diodes Research
- Astronomical Observations and Instrumentation
- Structural Response to Dynamic Loads
Soochow University
2020-2024
Huainan Normal University
2024
China Electric Power Research Institute
2024
Shandong University of Science and Technology
2021-2024
Hainan University
2024
University of Jinan
2024
North China Electric Power University
2024
Research Institute of Petroleum Exploration and Development
2024
Chongqing University
2020-2023
Jiangsu University
2023
Abstract When capacity constraints have to be considered at each depot due the existence of a limited number capacitated vehicles, multidepot vehicle routing problem (MDVRP) is nontrivial extension well‐known (CVRP). The MDVRP combines customer‐to‐depot assignment with several CVRPs. In real‐life scenarios, it usual find uncertainty in customers' demands. There are few works on stochastic (SMDVRP) and, best our knowledge, most them assume an unlimited fleet vehicles depot. This paper...
The parabolic equation (PE) method is employed to solve the Loran-C additional secondary factors (ASFs) over irregular terrain. Based on split-step Fourier transform (SSFT) algorithm, has been proven be numerically efficient. ASF results are compared those of integral (IE) and finite-difference time-domain (FDTD) method. Very good agreements observed. computational time PE several orders less than that other two. memory requirement similar IE, FDTD
We previously used back propagation neural network (BPNN) with the meteorological factors of receiver point to establish a model for predicting delay Loran-C signal over short distance. Nevertheless, long path, it is not proper use only point. In this letter, prediction that considers multiweather and multipoint was established by using more suitable generalized regression (GRNN) first compared three six points on found they have obvious differences. Then, based GRNN. Finally, further...
Multipath propagation and reverberation of underwater acoustic signal affect the accuracy localization estimation based on time difference arrival (TDOA). To solve problem, a novel algorithm is proposed to improve source. Based signals received at an array sensors, general framework for source using particle filtering proposed. A generic was derived. The simulation results demonstrate superiority method. resulting filter shown outperform traditional
Fly ash contains large amounts of soluble chlorides, including KCl, NaCl, and CaCl2. Currently, KCl NaCl from the wastewater obtained after washing are separated mainly via evaporative crystallization, whereas CaCl2 is preferentially precipitated using Na2CO3. These methods present poor separation performance NaCl. In this study, crystallization was used to simultaneously separate mixture The solubility test results theoretical recoveries were as a basis for experiments. 92.73% 92.70%,...
The dim lighting and excessive dust in underground mines often result uneven illumination, blurriness, loss of detail surveillance images, which hinders subsequent intelligent image recognition. To address the limitations existing enhancement algorithms terms generalization accuracy, this paper proposes an unsupervised method for enhancing mine images hue–saturation–value (HSV) color space. Inspired by HSV space, first converts RGB to space integrates Retinex theory into brightness (V...
In complex terrain environments such as high mountains and hills, traditional agricultural machinery cannot accurately complete tasks crop management harvesting. This paper used plant protection drones carriers to study the observation content of crops during their navigation process. Aiming at low accuracy quaternion cubature Kalman filtering algorithm for attitude estimation carrier nonlinear state model, a quaternon-based square root was proposed in this paper. The takes error gyro drift...
We previously introduced an efficient parabolic equation (PE) method to solve the Loran-C additional secondary factors (ASFs) in presence of irregular terrain. However, traditional PE analysis, based on approximation a narrowband source 100 kHz sinusoidal source, is not sufficient for realistic ASF prediction. In this letter, pulse employed further improve accuracy prediction over The main idea approach that it converts time-domain wave propagation problems frequency-domain ones, which can...
The traditional two-way (2W) parabolic equation (PE) (2W-PE) method has been applied for modeling groundwave propagation over irregular terrain. However, based on a staircase terrain model (STM), the is not sufficient in sloping facets modeling. Although more accurate one-way PE conformal mapping (CMM) available, it handles only forward-propagating waves and neglects backward-propagating waves, which become significant especially steep In this paper, hybrid 2W-PE presented to low-frequency...
Propagation characteristics of low-frequency radio waves at short ranges and with high propagation angles are analyzed by the finite-difference time-domain one-way/two-way parabolic equation (PE) methods. Both narrow-angle (NA) wide-angle (WA) PE expressions considered. It is observed that NAPE method hard to be applied in region where angle above 15°, whereas WAPE can obtain a higher accuracy so long as earth surface slope not very big. If terrain changes dramatically, results two-way more...
The parabolic equation (PE) method and finite‐difference time‐domain (FDTD) are combined to predict long‐range Loran‐C additional secondary factors (ASFs) in situations with near‐source complex topography. non‐uniform FDTD is employed the source region, while PE used for propagation over smooth terrain a long distance. By using advantages of each algorithm, hybrid FDTD–PE approach capable modelling topographic details, saving much computational resources as compared full solution. Numerical...
The capabilities of the narrow-angle (NA) and wide-angle (WA) parabolic equations (PEs) in physical coordinate system are well known. For use on irregular surface, a shift-map (SM) PE (SMPE) form was formulated terms transformed coordinates. In sharp contrast, little is known accuracy NA WA-SMPEs It thought that WA-SMPE entirely superior to NA-SMPE according behavior WA propagators. this article, we analyze NA-SMPEs coordinates through studying their artificial dispersion properties. found...
As the development of space structures is increasing fast, kinematic characteristic, dynamic characteristics, driving modes and influence component parameters a planar deployable support truss structure for antenna are discussed by means closed loop equations Kane equation. Also several examples analysis results under different presented. The show importance choice movements design also provide useful reference to other related structures.
With the development of down-scaling CMOS technology for low power, mixed-signal, and high frequency applications, optimal performance is shown to be shifted from lower moderate inversion toward weak regimes. High-frequency noise model a prerequisite designing radio millimeter-wave circuits, essential analysis nanoscale metal-oxide-semiconductor field-effect transistors (MOSFETs). In this paper, based on physical structure 40 nm MOSFET by considering drift-diffusion equation charge...