A5087250315- Synthetic Aperture Radar (SAR) Applications and Techniques
- Landslides and related hazards
- Genetic Mapping and Diversity in Plants and Animals
- Remote Sensing and Land Use
- Structural Health Monitoring Techniques
- Dam Engineering and Safety
- Underwater Vehicles and Communication Systems
- Speech and Audio Processing
- Robotic Path Planning Algorithms
- Advanced SAR Imaging Techniques
- Robotics and Sensor-Based Localization
- Precipitation Measurement and Analysis
- Geophysical Methods and Applications
- Underwater Acoustics Research
- Cryospheric studies and observations
- Military Defense Systems Analysis
- Soil Moisture and Remote Sensing
- Advanced Fiber Optic Sensors
- Direction-of-Arrival Estimation Techniques
- Non-Destructive Testing Techniques
- Hydrology and Sediment Transport Processes
- Fire Detection and Safety Systems
- Control and Dynamics of Mobile Robots
- Climate change and permafrost
- Advanced Decision-Making Techniques
Suzhou University of Science and Technology
2019-2024
Naval University of Engineering
2021
Shaoyang University
2021
Institute of Acoustics
2020
Chinese Academy of Sciences
2020
National University of Defense Technology
2013
United States Naval Academy
2012
Two significant uncertainties that are crucial for landslide susceptibility prediction modeling attribute interval numbers (AIN) division of continuous impact factors in frequency ratio analysis and various models. Five factor classifications (4, 8, 12, 16, 20) three data-driven models (deep belief networks (DBN), random forest (RF), neural network (back propagation (BP)) were used a total fifteen different scenarios studies order to investigate the effects these two on perform index...
Ground-based synthetic aperture radar interferometry (GB-InSAR) enables the continuous monitoring of areal deformation and can thus provide near-real-time control overall state dam surfaces. In small-scale a reservoir structure by GB-InSAR, ground-based (GB-SAR) image acquisition may be interrupted multiple interfering factors, such as severe changes in meteorological conditions area equipment failures. As result, observed phases before after interruption cannot directly connected, original...
Although constructing a dam can bring significant economic and social benefits to region, it be catastrophic for the population living downstream when breaks. Given dynamic nonlinear characteristics of deformation, traditional prediction model has been unable meet actual engineering demands. Consequently, this paper advocates novel method solve issue. The proposed is based on optimization improved chicken swarm (ICSO) support vector machine (SVM). To begin with, mean square error used as...
Spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R) has been proven to be a cost-effective and efficient tool for monitoring the Earth’s surface soil moisture (SSM) with unparalleled spatial temporal resolution. However, accuracy reliability of GNSS-R SSM estimation are affected by vegetation roughness. In this study, sensitivity delay Doppler map (DDM)-derived effective reflectivity is analyzed validated. The individual projected onto 36 km × Equal-Area Scalable Earth-Grid...
Abstract. It is important to properly identify the primary control elements of landslide susceptibility because modelling process and its uncertainties differ between machine learning predictions landslides. In response aforementioned issues, novel "weight mean method" suggested determine more precise master factors. Support vector (SVM) random forest (RF) are used as examples discuss prediction uncertainty based on learning. For Ruijin City, Jiangxi Province, inventory 12 different types...
With ground-based synthetic aperture radar (GB-SAR) discontinuous observation, the effect of rail error, caused by multiple installations, on imaging is difficult to eliminate with difference correction. In this article, impact error each point, which related incident angle theoretically analyzed. This first attempt introduce a baseline in application GB-SAR microdeformation build model that estimates point image. Then, correction established using angle, and influence image weakened model....
The selection of high-quality point targets, such as persistent scatterer (PS), is very important for GB-SAR interfero-metry deformation inversion. Considering the limitation single-threshold method (PS) target ground-based synthetic aperture radar (GB-SAR), a combined threshold proposed in this paper, and quality assessment designed to evaluate effectiveness selection. efficiency both combined-threshold was compared using real-case continuous images Geheyan dam area. analysis results...
The conventional beamforming is usually employed in the 3D acoustical imaging system to reconstruct images from signals received by 2D array. angular resolution and sidelobe levels are physically determined array used. To obtain 1 degree, aperture size of existing around 25cm × a working frequency 300kHz. Unfortunately, some particular applications such as diver handheld equipment, systems still too large, complexity also high. This paper proposes low-complexity underwater miniature with an...
Conventional beamforming is widely used in underwater three-dimensional (3D) acoustical imaging. However, the imaging quality of conventional limited, because limited capability angular resolution and high sidelobe levels beamforming. This paper proposes to apply a deconvolution method based on Fourier-based nonnegative least-squares algorithm 3D imaging, improve quality. Experiment shows that improves by two times decreases more than 10dB for sonar, compared
In geomagnetic aided navigation (GAN), the vehicle is expected to traverse areas with excellent matching suitability in order obtain high precision. The route planning problem under constraints studied based on particle swarm optimization (PSO) algorithm this article. Firstly, PSO briefly introduced and expanding space of nodes determined maneuverability vehicle. Then minimum movement distance, ability avoiding threats proximity suitable-matching are considered construct fitness function...
In view of the phenomenon that children are stranded in enclosed vehicle and lead to their death from time time, a safety protection system based on STM32 is designed. With seat as carrier main control chip, film pressure sensor microwave radar used detect whether there sitting, temperature, humidity carbon dioxide vehicle. When threshold exceeded, it will alarm. Build an intelligent monitoring with trinity perception, calculation The experimental debugging results show can better meet needs for
Abstract To improve the survivability and penetration probability of unmanned undersea vehicle(UUV) on near sea bottom combat missions, factors leading to sonar detection blind zone are analyzed, produced by underwater terrain obscuration is mainly studied. A range calculation method based DEM acoustic ray proposed, simulation study path planning carried out using invasive weed optimization algorithm. Simulation results show effectiveness proposed This can be applied UUV penetration, which...
This paper describes the basic theoretical principles for ground-based SAR, including signal processing method of stepped frequency continuous wave (SFCW) and synthetic aperture radar interferometric measurement, analyzing its resolution in range cross-range displacement monitoring accuracy. The analysis measured data a building structure two-dimensional illustrates validity SAR deformation monitoring. Later this paper, authors also make some preliminary look applications developments future.
Based on the velocities of waves near surface in concrete, propagation path and travel time different were calculated, influence crack these was analyzed.Some theoretical conclusions verified by FEM.The ultrasonic received array transducers calculated distinguished according to simulation.Simulation results show that when sound wave propagates through crack, longitudinal arrive at receiving arrays diffracts transverse generate new mode conversion, Rayleigh along (including side...
When the target number exceeds processing capacity of single radar and command commander, normal air handling cannot be guaranteed, how to properly distribute mission network ensure completion combat is a problem worthy further study. In order solve this problem, method classification proposed. The threat index analyzed quantified, classified by fuzzy clustering method. According performance, function characteristics each radar, classified. Analyze quantify matching class class, establish...