A5100375604- Infrared Target Detection Methodologies
- Calibration and Measurement Techniques
- Antenna Design and Analysis
- Combustion and Detonation Processes
- GNSS positioning and interference
- Optical Systems and Laser Technology
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Simulation and Modeling Applications
- Vehicle emissions and performance
- Planetary Science and Exploration
- Robotic Path Planning Algorithms
- Fire dynamics and safety research
- Combustion and flame dynamics
- Energetic Materials and Combustion
- Maritime Ports and Logistics
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Radio Wave Propagation Studies
- Robotics and Sensor-Based Localization
- Coal Properties and Utilization
- Dam Engineering and Safety
- Robotic Locomotion and Control
- Geophysical Methods and Applications
China Academy of Launch Vehicle Technology
2021-2024
Donghua University
2024
China Jiliang University
2023-2024
Dalian Maritime University
2023
China Electric Power Research Institute
2023
Hainan University
2023
Ansteel (China)
2023
Xi'an Institute of Optics and Precision Mechanics
2022-2023
University of Chinese Academy of Sciences
2023
North China Electric Power University
2023
Based on the radar equation and system noise characteristics, maximum detection range model of a space debris laser ranging at 1064 nm wavelength is established, taking into account factors atmospheric transmission sky background radiance. Through theoretical analysis simulation experiments, influencing radiance are studied, normalized by polynomial fitting. The results indicate that high comes from altitude low target zenith angle; small angle solar angle, while angular distance has no...
The effects of low-frequency electromagnetic casting (LFEC) on the microstructure and tensile properties 5A90 Al–Mg–Li alloy with without minor Sc were investigated. In addition to Sc, refined microstructures conventional direct chill cast (DCC) as-cast further more equiaxed grains formed in LFEC ingots Sc. Higher density, smaller size, uniform distribution Al3(Sc, Zr) aged induced by LFEC, which pins grain boundaries, can effectively inhibit recrystallization. As a result, it had been...
Investigations into the deactivation of explosion sensitivity and reduction flame propagation for aluminium alloy polishing wastes were carried out by addition ultrafine Al(OH)3 inerting agent. Meanwhile, high-purity powders with similar mean diameters also used as a comparative study. The characteristics dust waste under different ratios (ε) tested investigated using standardised Hartmann tester developed experimental platform. results show that minimum ignition energy powder is between 40...
The influence of the overlying clay on progression piping in sandy gravel foundation water-retaining structures is often neglected. In order to study this influence, an experimental investigation was conducted a laboratory-scale model. It discovered that critical hydraulic gradient and area tunnel increase when thickens. With thicker layer, erosion below layer occurs later, but, once starts, rate very high average velocity water seeping through cross-section increases rapidly due low...
The ports around Bohai in China were taken as the object of study this research. In light panel data from 2014 to 2020, super-efficiency SBM model was applied measure and calculate energy conservation emission reduction efficiency ports. addition, indicator system influencing factors for constructed on basis STIRPAT model, which provided a brand-new research perspective environmental regulation, method ridge regression studying reduction. conclusion shows: except Qingdao port Tianjin...
In this letter, a new classification method for fully polarimetric synthetic aperture radar (PolSAR) data based on three novel parameters is presented. The are derived from the eigenspace of coherency matrix as linear combinations its eigenvalues. proposed method, maximum value out determined to assign label each image pixel, and PolSAR classified into classes accordingly. Experimental results NASA/JPL AIRSAR L-band CSA RADARSAT-2 C-band illustrate validity efficacy procedure.
Summary A novel concept is described here that utilizes externally applied heat to a solid rod of reconstituted tobacco biomass form stream aerosol under progressively oxygen-deficient atmosphere. The boundary auto-ignition was determined at oxygen concentrations 0%, 5%, 10%, and 21% then the effects these different atmospheres on various parameters were studied. Experimental results indicated ignition temperature decreased with increase concentration negative coefficient (NTC) for...
This paper proposes a distributed intelligent assistant robotic system in order to improve the quality of elderly people's life population aging society. The is composed embedded sensor networks and multirobot platform. In proposed system, we use SP 2 ATM (simultaneous path planning topological mapping) with RBPF (Rao-Blackwellized particle filter) for localization mobile robots. perform service tasks, an accurate reliable 3D environment map reconstructed by using effective reconstruction...
To realize the long-period and automated data collection of lunar radiation eliminate geometric errors hyperspectral image during observation process, this paper proposes a slit-type spectrometer method based on rotating table equatorial mount. This uses wide field finder-scope to automatic moon tracking positioning; at same time, it corrects drift angle oversampling collected raw data. The results show that full situation is as non-full situation. can effectively find track position moon's...
The multimodal apparent diffusion (MAD) is a new approach with predefined number of components associated microstructure. In this work, the performance quad-modal in kidney was assessed simulation for different conditions. In-vivo demonstration and comparison other models showed an explicable parametrization improved fitting performance.
In this study, we focus on the trajectory tracking control problem ofa wheeled mobile robot (WMR) in an uncertain dynamic environment. Concerningthe fact that upper boundary may be usually achieved prior according to thephysical properties of terrain, crucial message is utilized construct thecontrollers. Firstly, a model for WMR including rolling resistance ispresented, whose state variables are longitudinal and rotational velocities, as well asthe angle platform. Secondly, with aid...
Flight test is a system engineering with high technology, risk and complexity. Currently, The development of existing flight requirements depends on historical experience, which prone to insufficient use experience poor standardization the process. In order avoid above situation, based process, this paper proposes evaluation technology evidence network, evaluate effectiveness network. Then, feasibility method verified by user type-A civil aircraft performance.
The electromagnetic environment faced by modern aircraft is becoming more and complex, the sensors on are subject to interference threat. data link formed sensor network among several can effectively improve transmission performance anti-interference ability. Inter-aircraft emphasizes high communication rate, large coverage angle domain, small attitude constraint, low interception airborne environmental adaptability. Therefore, it required that inter-machine antenna should have...
Novel vehicle technology has become a hot research topic in the aerospace field recent years. In order to improve aerodynamic shape and stealth performance, conformal antenna must be used. This puts strict requirements on longitudinal height, volume weight of antenna. At same time, relevant electronic equipment aircraft platform also forward higher demands for broadband, dual polarization, high gain, low side lobes. Therefore, low-profile, miniaturized broadband dual-polarization hotspot...
The paper combines with actual characteristics of Chinese city, discusses about and builds a Low-carbon transportation city evaluation index system, puts forward set simple practical methods standards system; case study Xi'an City, this also conducts empirical current development level in 2013 planning 2020 respectively, verifies scientific validity the system.