A5100337596- GNSS positioning and interference
- Ionosphere and magnetosphere dynamics
- Geophysics and Gravity Measurements
- Animal Behavior and Reproduction
- Avian ecology and behavior
- Inertial Sensor and Navigation
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Plant and animal studies
- Chalcogenide Semiconductor Thin Films
- UAV Applications and Optimization
- Software System Performance and Reliability
- earthquake and tectonic studies
- Evaluation Methods in Various Fields
- Optical Wireless Communication Technologies
- Robotics and Sensor-Based Localization
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Transportation Planning and Optimization
- Solar and Space Plasma Dynamics
- Radio Astronomy Observations and Technology
- Advanced Frequency and Time Standards
- Software Engineering Research
- Space exploration and regulation
- Evaluation and Optimization Models
- Electromagnetic Scattering and Analysis
Wuhan University
2016-2025
Wuhan Textile University
2025
Chang'an University
2020-2025
Institute of Earth Environment
2025
China Academy of Space Technology
2023
Xi'an Institute of Optics and Precision Mechanics
2023
Chinese Academy of Sciences
2023
Ministry of Natural Resources
2023
Shenzhen University
2022
Technische Universität Berlin
2022
Abstract Since the first pair of BeiDou satellites was deployed in 2000, China has made continuous efforts to establish its own independent Navigation Satellite System (BDS) provide regional radio determination satellite service as well and global navigation services, which rely on high quality orbit clock products. This article summarizes achievements precise (POD) BDS past decade with focus observation dynamic models. First, disclosed metadata is presented contribution POD addressed. The...
By end-2018, the Chinese BeiDou satellite system (BDS) has entered its third phase of global scale coverage (BDS-3). This study presents and validates a modified modeling aspect concerning an intersatellite link (ISL) hardware delay estimation. The precise orbit determination (POD) results BDS-3 demonstrate this along with calibrated center offsets (PCOs) ISL terminal to help improve accuracy. After onboarding data, two additional sets POD solutions using regional ground stations are...
Abstract Antimony selenosulfide (Sb 2 (S,Se) 3 ) has been emerging as a promising light absorber in the past few years owing to tunable bandgap (1.1–1.7 eV), high absorption coefficient (>10 5 cm −1 and excellent phase environmental stability. However, efficiency of Sb solar cells lags far behind Shockley–Queisser limit. One critical obstacles originates from various extrinsic intrinsic defects. They mostly locate deep energy levels are prone form recombination centers, inhibiting...
A key limitation for precise orbit determination of BeiDou satellites, particularly satellites in geostationary (GEO), is the relative weak geometry ground stations. Fortunately, data from a low earth orbiting satellite with an onboard GNSS receiver can improve compared to using only data. The Chinese FengYun-3C (FY3C) carries Occultation Sounder equipment both dual-frequency GPS (L1 and L2) (B1 B2) tracking capacity. satellite-induced variations pseudoranges have been estimated multipath...
Incorporating dodecylphosphonic acid additives into 1.77 eV-bandgap perovskites enabled single-junction solar cells to achieve a PCE of 20.2%. Tandem further reached impressive PCEs 27.41% (two-terminal) and 28.65% (four-terminal).
UAVs face many challenges in autonomous obstacle avoidance large outdoor scenarios, specifically the long communication distance from ground stations. The computing power of onboard computers is limited, and unknown obstacles cannot be accurately detected. In this paper, an scheme based on fusion millimeter wave radar monocular camera proposed. visual detection designed to detect which more robust than traditional algorithms. Then extended Kalman filter (EKF) data used build exact real 3D...
The solar radiation pressure (SRP) model, as a key factor affecting the precise orbit determination (POD) accuracy of navigation satellites, is related to state and optical properties satellite surface. This study establishes high-precision SRP model for BDS-3 medium earth (MEO) satellites manufactured by China Academy Space Technology based on engineering parameters, which comprises satellites’ size measured before launch. Then, physical-based re-constructed into body-fixed coordinate...
Abstract Tandem perovskite solar cells represent a significant avenue for the future development of photovoltaics. Despite their promise, wide‐bandgap perovskites, essential constructing efficient tandem structures, have encountered formidable challenges. Notably, high bromine content (>40%) in these 1.78 eV bandgap perovskites triggers rapid crystallization, complicating control grain boundary growth and leading to films with smaller sizes higher defect density than those narrower...
Abstract All‐perovskite tandem solar cells (TSCs) paired by wide‐bandgap (WBG) perovskites with narrow‐bandgap holds the potential to overcome Shockley‐Queisser limitation. However, severe phase segregation and non‐radiative recombination of WBG perovskite put on a shadow for their power conversion efficiency stability. Here, an interfacial engineering strategy is introduced into triple‐halide perovskite. Potassium trifluoromethanesulfonate (TfOK) utilized reconstruct buried interface The...
In contrast to the US Global Positioning System (GPS), Russian Navigation Satellite (GLONASS) and European Galileo, developing Chinese BeiDou satellite navigation system (BDS) consists of not only Medium Earth Orbit (MEO), but also Geostationary (GEO) as well Inclined Geosynchronous (IGSO) satellites. this study, Precise Point (PPP) PPP with Integer Ambiguity Resolution (IAR) are obtained. The contributions these three different types BDS satellites in Asia-Pacific region assessed using data...
As one of the most essential modeling aspects for precise orbit determination, solar radiation pressure (SRP) is largest non-gravitational force acting on a navigation satellite. This study focuses SRP BeiDou-3 experimental satellite I2-S (PRN C32), which an obvious deficiency that related to was formerly identified. The laser ranging (SLR) validation demonstrated determined with empirical 5-parameter Extended CODE (Center Orbit Determination in Europe) Model (ECOM1) has sun elongation angle...
Comprehensive Summary Sensing the chirality of molecules is great importance to fields such as enantioselective synthesis, pharmaceutical industry, and biomedicine. Plasmonic nanoparticles are ideal candidates for molecular sensing due their inherent plasmonic properties that significantly enhance sensitivity surrounding molecules. Developing nanoparticle‐molecule complexes has drawn enormous attention in recent years intriguing potential applications. Thus, this review, we believe it timely...
Starting from February 2023, the International Laser Ranging Service (ILRS) began releasing satellite laser ranging (SLR) data for all BeiDou global navigation system (BDS-3) medium earth orbit (MEO) satellites. SLR serve as best external reference validating orbits, providing a basis comprehensive evaluation of BDS-3 orbit. We utilized to May 2023 comprehensively evaluate orbits MEO satellites different analysis centers (ACs). The results show that, whether during eclipse season or yaw...
In the absence of detailed surface information, empirical solar radiation pressure (SRP) models, such as five-parameter Empirical CODE Orbit Model (ECOM1) and its extended version-ECOM2, are widely used for modeling SRP forces acting on GNSS satellites. This study shows that orbits BeiDou-3 Inclined Geosynchronous satellites (IGSOs) determined with ECOM1 model suffer from systematic once-per-revolution radial orbit errors, which can be partly reduced by ECOM2 model. To eliminate IGSO optical...
Previous studies thought that at the within‐population level, whether a female bird engages in extra‐pair (EP) mating depends on how synchronous she is breeding time with all other females around her, presumably synchronization might affect female's opportunities to meet potential EP sires who socially pair these females. However, when or males are choosy about partners and mate one individual only, probability of may be most influenced by synchrony between partners. In such case,...
The orbit accuracy of the navigation satellites relies on accurate knowledge forces spacecraft, in particular non-conservative perturbations. This study focuses Inclined Geosynchronous Orbit (IGSO) and Medium Earth (MEO) regional Chinese BeiDou Navigation Satellite System (BDS-2), for which apparent deficiencies models are identified evidenced Laser Ranging (SLR) residuals. errors derived from empirical 5-parameter Extended CODE Model (ECOM) as well a semi-analytical adjustable box-wing...