A5039105025- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Inertial Sensor and Navigation
- Groundwater and Isotope Geochemistry
- Ionosphere and magnetosphere dynamics
- Groundwater flow and contamination studies
- Anomaly Detection Techniques and Applications
- Target Tracking and Data Fusion in Sensor Networks
- Reinforcement Learning in Robotics
- Gait Recognition and Analysis
- Groundwater and Watershed Analysis
- Human Pose and Action Recognition
- Robotic Path Planning Algorithms
- Distributed and Parallel Computing Systems
- Evaluation and Optimization Models
- Calcium Carbonate Crystallization and Inhibition
- Geoscience and Mining Technology
- Fluoride Effects and Removal
- Flow Measurement and Analysis
- Radioactivity and Radon Measurements
- Artificial Immune Systems Applications
- Chaos-based Image/Signal Encryption
- Rock Mechanics and Modeling
- Water Quality and Pollution Assessment
- Radiation Effects in Electronics
Shandong University of Science and Technology
2009-2025
Wuhan University
2024
Beihang University
2021-2022
Shanghai Jiao Tong University
2002
With the rapid development and gradual perfection of GNSS in recent years, improving real-time service performance has become a research hotspot. In single-point positioning, broadcast ephemeris is used to provide space–time reference. However, orbit parameters have meter-level errors, no mathematical model can simulate variation this, which restricts positioning accuracy GNSS. Based on this background, paper uses BP (Back Propagation) neural network PSO (Particle Swarm Optimization)–BP...
The evaluation of vulnerability is a crucial aspect in the sustainable development, utilization, and preservation groundwater resources. This study utilizes comprehensive approach, integrating systematic analysis hydrogeological conditions utilization observed collected data. Yishu River Basin (YRB) was conducted by employing DRASTIC model, along with zone overlay function GIS software. Seven indicators were considered this assessment. findings demonstrate that YRB can be categorized into...
Temporal action localization (TAL) involves dual tasks to classify and localize actions within untrimmed videos. However, the two often have conflicting requirements for features. Existing methods typically employ separate heads classification but share same input feature, leading suboptimal performance. To address this issue, we propose a novel TAL method with Cross Layer Task Decoupling Refinement (CLTDR). Based on feature pyramid of video, CLTDR strategy integrates semantically strong...
The broadcast ionospheric model is one of the main methods for eliminating delay errors Global Navigation Satellite Systems (GNSS) single-frequency users. GPS Klobuchar (GPSK8) widely used GPS, while BDS usually implements (BDSK8) and BeiDou Broadcast Ionospheric Delay Correction Model (BDGIM). Geomagnetic storms may cause interference within ionosphere near-Earth space, compromising accuracy models adversely affecting navigation satellite systems. This paper analyzes static Standard Point...
Global navigation satellite system (GNSS) provides users with all-weather, continuous, high-precision positioning, navigation, and timing (PNT) services. In the operation use of GNSS, influence space environment is a factor that must be considered. For example, during geomagnetic storms, series changes in Earth’s magnetosphere, ionosphere, upper atmosphere affect GNSS’s positioning performance. To investigate performance global systems this study selected three storm events occurred from...
In microbial mineralization experiments, the induction time of mineral precipitation is ambiguous, and this may lead to difficulties in reproducing confirming test results. To explore link between microbially mediated carbonate precipitation, we report here mineralogy morphology precipitates induced by halophilic Halomonas utahensis WMS2 bacterium media with various Mg/Ca molar ratios over a range times. The results show that biominerals are formed an alkaline environment affected ammonia...
The manipulator control model has the characteristics of high-order, nonlinear, multivariable and strong coupling, which makes it difficult for to have good adaptability autonomy. Aiming at problem poor reusability autonomy applications, a motion planning algorithm based on reinforcement learning is proposed. In this paper, continuous Actor-Critic applied increase environmental applicability manipulator, realize intelligent under simple kinematics modeling. At first, simulation environment...
This paper introduces an Extend Kalman filter (EKF) innovation-based error bounds against Global Navigation Satellite System (GNSS) fault of the tightly coupled GNSS/Inertial (INS) integrated navigation system. A new GNSS/INS integrity monitoring framework and risk allocation tree under assumption are developed to assure unmanned aerial vehicle (UAV) systems. The error-state EKF obtained according GNSS propagation derivation. research then presented detection method with chisquare test...
Abstract In the application of integrity monitoring Global Navigation Satellite System (GNSS)/Inertial integrated navigation system in complex environments, such as vegetation covered areas, Kalman filtering (KF) has disadvantages low positioning precision, poor performance fault identification and error bounds. This study proposes an method based on dynamic fading filter optimisation. According to real‐time updates innovation, a algorithm is designed, which can adjust factor dynamically....
All BeiDou global navigation satellite system (BDS-3) satellites are equipped with Ka-band inter-satellite link (ISL) payloads to achieve the ranging and communication. With rapid development of low earth orbit (LEO) satellites, LEO onboard BDS-3 observations also become available. The ISL data can be an effective supplement for precise determination (POD) satellite. In this research, we processed integrated POD real ground station, GNSS, observations. To analyze contribution different...
Temporal action localization (TAL) involves dual tasks to classify and localize actions within untrimmed videos. However, the two often have conflicting requirements for features. Existing methods typically employ separate heads classification but share same input feature, leading suboptimal performance. To address this issue, we propose a novel TAL method with Cross Layer Task Decoupling Refinement (CLTDR). Based on feature pyramid of video, CLTDR strategy integrates semantically strong...
Dual-Frequency Ground-Based Augmentation Systems (GBAS) can be affected by receiver Inter-Frequency Bias (IFB) when Ionosphere-Free (Ifree) smoothing is applied. In the framework of proposed GBAS Approach Service Type F (GAST-F), IFB in Ifree smoothed pseudorange corrected. However, residual uncertainty still exists, which may threaten integrity system. This paper presents an improved algorithm for airborne protection level considering IFBs to protect dual-frequency GBAS. The multiplied a...