A5026005771- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Advanced Frequency and Time Standards
- Inertial Sensor and Navigation
- Chaos control and synchronization
- Quantum chaos and dynamical systems
- Nonlinear Dynamics and Pattern Formation
- Stability and Control of Uncertain Systems
- Complex Systems and Time Series Analysis
- Microbial Inactivation Methods
- Neural Networks Stability and Synchronization
- earthquake and tectonic studies
- Mathematical Dynamics and Fractals
- Target Tracking and Data Fusion in Sensor Networks
- Power Systems and Technologies
- Satellite Communication Systems
- Power System Reliability and Maintenance
- Cloud Data Security Solutions
- Advanced Decision-Making Techniques
- Fatigue and fracture mechanics
- Indoor and Outdoor Localization Technologies
- High-Voltage Power Transmission Systems
- Chaos-based Image/Signal Encryption
- Advanced DC-DC Converters
Central South University
2013-2024
Shanghai Electric (China)
2023
Nanjing Surveying and Mapping Research Institute (China)
2020
Xihua University
2020
Wuhan University
2016-2019
Shandong Iron and Steel Group (China)
2016
Donghua University
2008-2010
University of Hagen
2009-2010
Wuhan Polytechnic University
2010
Senshu University
2004
With the rapid development of BeiDou system (BDS) and steady progress Galileo system, current GNSS (Global Navigation Satellite System) constellations consist GPS, GLONASS, Galileo. The real signals from four have been available, which allows us to analyse compare their measurement noises multipath effects. In this study, a zero-baseline test is conducted using two ‘Trimble NetR9’ receivers assess measurements on multiple frequencies satellite systems. double difference approach utilised...
In view that most Global Navigation Satellite System (GNSS) users are still using single-frequency receivers due to the low costs, Precise Point Positioning (PPP) has been attracting increasing attention in GNSS community. For a long period, PPP technology mainly relied on (GPS). With recent revitalisation of Russian GLONASS constellation and two newly emerging constellations, BeiDou Galileo, it is now feasible investigate performance Four-Constellation integrated Single-Frequency (FCSF-PPP)...
The single point positioning (SPP) mode has been widely used in many fields such as vehicle navigation, Geographic Information System and land surveying. For a long period, the SPP technology mainly relies on GPS system. With recent revitalisation of GLONASS constellation two newly emerging constellations BeiDou Galileo, it is now feasible to investigate performance quad-constellation integrated (QISPP) with GPS, GLONASS, Galileo measurements. As satellite-based technology, QISPP expected...
The joint use of multi-frequency signals brings new prospects for precise positioning and has become a trend in Global Navigation Satellite System (GNSS) development. However, type inter-frequency clock bias (IFCB), namely the difference between satellite clocks computed with different ionospheric-free carrier phase combinations, was noticed. Consequently, B1/B3 point (PPP) cannot directly current B1/B2 products. Datasets from 35 globally distributed stations are employed to investigate...
Abstract. In this study, we focused on the retrieval of atmospheric water vapor density by optimizing tomography technique. First, established a new weighted average temperature model that considers effects and height, assisted Constellation Observing System for Meteorology, Ionosphere Climate (COSMIC) products. Next, proposed method to determine scale height vapor, which will improve quality vertical constraints. Finally, determined smoothing factor in horizontal constraint based Interim...
This study systematically investigates pre-seismic ionospheric anomalies preceding the 2023 Jishishan Ms6.2 earthquake using Total Electron Content (TEC) data derived from BDS Geostationary Orbit (GEO) satellites. Multi-scale analysis integrating Butterworth filtering and wavelet transforms decoupled TEC disturbances into three distinct frequency regimes: (1) High-frequency perturbations (0.56–3.33 mHz) manifest as localized (amplitude ≤4 TECU, range <300 km),...
Abstract Multi-frequency integration can improve the performance of precise point positioning (PPP), but inter-frequency clock bias (IFCB) makes it impossible to directly apply dual-frequency ionospheric-free (IF) combined satellite products multi-frequency PPP processing. In real-time processing, IFCB network solutions be solved through a ground reference network. However, this significantly increases computing burden at server and may cause delay data streams, ultimately exerting negative...
This paper introduces the Chinese BeiDou satellite system and its comparison with actual completed American GPS Russian GLONASS systems. The consists of 14 satellites covering totally Asia-Pacific area. A Single Point Positioning (SPP) test has been realised in Changsha, Hunan province, China, to show advantage using combined pseudorange solutions from these 3 navigation systems especially obstructed sites. shows that, an elevation mask angle 10°, accuracy is improved by about 20% horizontal...