A5027297972- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Inertial Sensor and Navigation
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Advanced Frequency and Time Standards
- Boron Compounds in Chemistry
- Spacecraft Design and Technology
- Petri Nets in System Modeling
- Nuclear Materials and Properties
- Radiation Detection and Scintillator Technologies
- Urban Transport and Accessibility
- Fusion materials and technologies
- High-Energy Particle Collisions Research
- Industrial Automation and Control Systems
- Night-time city culture
- Impact of Light on Environment and Health
- Space Satellite Systems and Control
Chongqing Jiaotong University
2023
Wuhan University
2017-2022
Abstract Accelerator-based neutron sources are critical infrastructures in today's scientific research and industrial fields, with the source target being key component determining performance of source. Traditional accelerator targets typically use homogeneous elemental materials high yield as material. These face challenges terms operational lifespan under high-temperature high-radiation environments. The design next-generation brilliance demands better thermal conductivity, longer...
The rapid movement of low Earth orbit (LEO) satellite can improve geometric diversity, which contributes to the convergence Global Navigation Satellite System (GNSS) precise point positioning (PPP). However, LEO onboard receiver clock cannot be used directly by PPP users as because and absorb different code delays when receiving transmitting signals. In this study, a real-time estimation approach for based on ground tracking stations was proposed first time. feasibility analyzed using time...
The BeiDou navigation satellite system (BDS-3) has been deployed and provides positioning, navigation, timing (PNT) services for users all over the world. On basis of BDS-2 signals, BDS-3 adds B1C, B2a, B2b, other signals to realize compatibility interoperability with global systems (GNSS). Network real-time kinematic (RTK) technology is an important regional high-precision GNSS positioning technology. Combined network RTK service platform software developed by author’s research group...
Abstract. Using nighttime lights data combined with LandScan population counts and socioeconomic statistics, dynamic change was monitored in the social economy of five countries Central Asia, from 1993 to 2012. In addition, spatial pattern regional historical development analyzed, using this data. The included study were Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan Turkmenistan. economic these Asian countries, movement center, distribution poor areas night light index (NLDI) studied at a...
Abstract Many low Earth orbit (LEO) satellite constellations have been designed in recent years to provide global broadband Internet services. These opportunities for LEO satellites serve as navigation by launching signals while also being equipped with an onboard system (GNSS) receiver. We propose a kinematic precise determination (KPOD) and clock estimation (PCE) approach integrating regional ground observations of satellites. By taking into account the bias, this can demonstrate...
For short baseline real-time kinematic (RTK) positioning, the atmosphere and broadcast ephemeris errors can be usually eliminated in double-differenced (DD) processing for synchronous observations. However, case of possible communication latency time, these may not DD treatments due to their variations during time. In addition, time variation present different characteristics among GPS, GLONASS, BDS, GALILEO satellite orbit clock types. this contribution, formulas studying offset error...
The frequency division multiple access (FDMA) strategy used in GLONASS causes inter-frequency phase bias (IFPB) and code (IFCB) between receivers from different manufacturers. existence of IFPB IFCB significantly increases the difficulties fixing ambiguity limits accuracy reliability positioning. Moreover, initial value may be unavailable or unreliable with increasing number manufacturers recent years. In this study, a real-time reliable calibration algorithm based on multi-GNSS assistance...
The traditional precision orbit determination (POD) of Global Navigation Satellite System (GNSS) usually relies on a large number global ground stations. rapid development the Low Earth Orbit (LEO) communication constellation in recent years provides an opportunity for integrated POD LEO and GNSS satellites. participation abundant observations from onborne receivers can greatly improve accuracy, availability, integrity However, improvement accuracy is accompanied by sharp increase...