A5101715560- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Radiation Effects in Electronics
- Geomagnetism and Paleomagnetism Studies
- Wireless Signal Modulation Classification
- Atomic and Subatomic Physics Research
- Astro and Planetary Science
- Magnetic Field Sensors Techniques
- Earthquake Detection and Analysis
- Radiation Detection and Scintillator Technologies
- Photocathodes and Microchannel Plates
- Plasma Diagnostics and Applications
- Radiation Therapy and Dosimetry
- Cognitive Radio Networks and Spectrum Sensing
- Particle Detector Development and Performance
- Electrostatic Discharge in Electronics
- Radar Systems and Signal Processing
- Non-Destructive Testing Techniques
- Planetary Science and Exploration
- Spacecraft Design and Technology
- Atmospheric Ozone and Climate
- Space exploration and regulation
- Inertial Sensor and Navigation
- Diamond and Carbon-based Materials Research
- Space Technology and Applications
Peking University
2013-2023
National University of Defense Technology
2023
University of Electronic Science and Technology of China
2023
Jiangsu Vocational College of Medicine
2012
The University of Texas at San Antonio
2012
Space Engineering University
2008
Dalian Institute of Chemical Physics
2008
Gold nanorods with localized surface plasmon resonance (LSPR) can be chemically synthesized. We systematically investigated the effects of reaction parameters and centrifugation on fine tuning rod dimension in scale-up production (80–100 mL). Nanorods absorption bands from 600–1050 nm were fabricated precise control aspect ratio (AR) 1.5 to 8.9. Although all chemicals are important directing nanostructure, silver ion concentration seed/Au 3+ most effective variations adjust wavelength. With...
Abstract The Medium‐Energy Electron Detector (MEED), a space weather monitoring instrument on the Fengyun‐3E (FY‐3E) satellite, is introduced in this paper. MEED utilizes pin‐hole imaging technology low‐orbit satellites for medium‐energy electron detection. Two orthogonal sensor heads enable to measure electrons from 18 directions simultaneously energy range of 30–600 keV (divided into eight exponentially distributed channels). has ∼12° angular resolution and covers two 180° × 30° fields...
Abstract In this study, we carry out a comprehensive analysis of secular variation the South Atlantic Anomaly. The center location Anomaly (SAA) is derived from proton flux measurements different energy channels by SAMPEX (Solar Anomalous and Magnetospheric Particle Explorer)/PET (Proton/Electron Telescope). results are compared with National Oceanic Atmospheric Administration/Medium Energy Proton Electron Detector observations International Geomagnetic Reference Field 12 (IGRF12)...
Deep dielectric charging/discharging is a serious space environmental effect. Charging electric fields are the fundamental cause of discharging. In order to quantitatively mitigate deep charging effects, GEANT4 toolkit and radiation-induced conductivity model were used calculate maximum possible internal potential field with different shielding layer thicknesses, ground types. The study selected electron spectra from geostationary earth orbit (GEO) jupiter orbits as input environment. With...
Deep dielectric charging, which is a coupling process of charge deposition and relief, significant factor in spacecraft anomalies failures. With the aim developing method for evaluating deep charging hazards, this study investigated leakage current electric field grounded dielectrics space usage by combining Monte Carlo simulation model radiation-induced conductivity. The analysis adopts multiple cases electron spectra various thicknesses shielding layer dielectric. results show that...
AC vector magnetometers have recently become increasingly widespread. The calibration of ac before use is critical. Based on traditional ellipsoid fitting, which suitable for calibrating dc magnetometers, a method presented. Simulation analysis and experimental verification demonstrate that this effective in including scaling factors, angular misalignments, offset errors.
Magnetic sensor array has become increasingly widespread in use. Because of the manufacturing process, magnetic sensors an inevitably experience calibration factor errors. Therefore, a is very important before However, it lacks explicit and quantitative measures on how to calibrate array. By using fields produced by standard source at different locations, practicable method was proposed based least-squares The dimensions are about <inline-formula...
A deep dielectric charging effects monitor was proposed for providing in situ measurements of on satellites via the surface leakage currents and internal potential dielectric. The detailed design first flight results onboard a medium Earth orbit (MEO) navigation satellite were discussed. Large temporal variations observed outer zone. data showed that maximum electric field FR4 less than 1.5 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
By using the concept of a high-pressure, gravity-independent singlet oxygen generator (SOG) proposed by Emanuel and based on principle that rotating fluid is capable producing an enormous centrifugal force, novel-type centrifugal-flow (CFSOG) was designed constructed. In this device, O2(1Δ) generated in reaction gaseous Cl2 with basic hydrogen peroxide (BHP) liquid flow then removed from BHP phase force. Meanwhile, microdroplets formed during Cl2+BHP were gas force produced high-speed along...
火星已经成为深空探测的重要目标之一, 登陆火星并在火星生存是人类探测火星的终极目标, 因此电离层是必须了解的火星电磁环境. 火星电离层探测包括直接探测和间接探测. 直接探测精度高, 有较高的空间分辨率, 但是观测时间短, 无法提供长期稳定的探测结果. 对火星电离层的间接探测结果主要来自无线电掩星探测和顶部雷达探测. 无线电掩星探测可实现对火星电离层整个电子密度剖面的长期稳定探测, 但其空间水平分辨率较低, 且可探测的电离层太阳天顶角范围受到地球与火星轨道的限制. 顶部雷达探测对火星电离层的探测具有很高的时间分辨率和空间分辨率, 且同样可进行长期稳定探测, 为火星电离层研究提供了最新的支持. 通过对火星电离层探测的基本方法及典型观测结果的分析, 提出通过几种探测方法适当结合的方式, 同时对火星电离层进行观测, 能够大大推进对火星电离层的研究.
Abstract The observations of the particle detector inside ‘ZY‐1' (CBERS‐1) satellite are compared with radiation belt models (AE8/AP8). It is found that measurements in SAA(Southern Atlantic Anomaly) accord predictions by models, while measured electron flux much lower than prediction AE8 model regions southern and northern aurora belts. According to NOAA satellite, this difference considered be caused pitch angle distributions SAA particle's inclined isotropic, belts it obviously...