A5101705111- Inertial Sensor and Navigation
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- earthquake and tectonic studies
- Advanced Computational Techniques and Applications
- Target Tracking and Data Fusion in Sensor Networks
- Astronomical Observations and Instrumentation
- Statistical and numerical algorithms
- Analog and Mixed-Signal Circuit Design
- Geological and Geochemical Analysis
- Radio Frequency Integrated Circuit Design
- Remote Sensing and LiDAR Applications
- Robotics and Sensor-Based Localization
- Ionosphere and magnetosphere dynamics
- Seismic Waves and Analysis
- High-pressure geophysics and materials
- Advanced Algorithms and Applications
- Advanced Statistical Methods and Models
- Geophysics and Sensor Technology
- Indoor and Outdoor Localization Technologies
- Advanced Measurement and Detection Methods
- Geophysical Methods and Applications
- Seismology and Earthquake Studies
- Advanced SAR Imaging Techniques
- Innovative Energy Harvesting Technologies
Wuhan University
2015-2024
Beijing Normal University
2024
University of Science and Technology Beijing
2024
Space Engineering University
2024
Yantai Nanshan University
2023
China Jiliang University
2023
University of Wisconsin–Madison
2021-2022
Xinjiang University
2022
Shandong University
2021
Beijing Satellite Navigation Center
2014-2020
Accurate measurement of the railway track geometry is a task fundamental importance to ensure quality in both construction phase and regular maintenance stage. Conventional measuring trolleys (TGMTs) combination with classical geodetic surveying apparatus such as total stations alone cannot meet requirements accuracy efficiency at same time. fast applications call for an innovative method that can measure all or most geometric parameters short time without interrupting traffic. We provide...
The integrated navigation system consisting of an inertial (INS) and Global Navigation Satellite System (GNSS) provides continuous high-accuracy positioning whereas the accuracy during a GNSS outage inevitably degrades owing to INS error divergence. To reduce such degradation, gated recurrent unit (GRU) adaptive Kalman filter (AKF)-based hybrid algorithm is proposed. GRU network, which has advantages high efficiency, constructed predict position variations outage. Furthermore, this paper...
We use Global Positioning System (GPS) data and kinematic block models to study the present‐day deformation of southern Tibet. GPS from 33 sites in Tibet Nepal surveyed between 1991 2000 reveal 13 ± 2 mm/yr N110°E extension Lhasa Shiquanhe (80°E–91°E), which 9.7 3.0 represents permanent Tibetan crust. The remaining ∼3 results elastic locked, curving Main Himalayan Thrust fault. This is spatially nonuniform. One half two thirds concentrated across Yadong‐Gulu rift, with an opening rate 6.5...
Abstract The Gravity Recovery And Climate Experiment (GRACE) mission has achieved a quantum leap in knowledge of the Earth's gravity field. However, current field solutions still cannot reach prelaunch baseline accuracy. One reasons for that is presence colored noise GRACE data, which typically ignored classical dynamic approach to modeling. In this research, we propose account by applying frequency‐dependent data weighting (FDDW) scheme, so enhanced estimates are produced. monthly compared...
Abstract This paper proposes an Equivariant Filtering (EqF) framework for the inertial-integrated state estimation. As kinematic system of navigation can be naturally modeled on matrix Lie group SE 2 (3), symmetry exploited to design equivariant filter which extends invariant extended Kalman filtering group-affine and overcomes inconsitency issue traditional extend filter. We firstly formulate dynamics as systems. Then, we prove left properties dynamics. Finally, earth-centered earth-fixed...
Abstract In this paper, a unified model and method to establish the velocity field of horizontal movement strain using GPS data based on principle least squares collocation are proposed. Meanwhile, some questions discussed, which include influence different reference in describing its geometric deformation meanings, scales space frequency domain described field. Then, collected from regional networks Crustal Movement Observation Network China is processed analyzed. Lastly, proposed paper...
The orthometric height (OH) system plays a key role in geodesy, and it has broad applications various fields activities. Based on general relativity theory (GRT), an arbitrary equi-geo- potential surface, there does not exist the gravity frequency shift of electromagnetic wave signal. However, between two different equi-geopotential surfaces, exists gra- vity relationship geopotential difference points P Q is referred to as equation. this equation, one can determine well OH separated either...
In this paper, a novel oblique-incidence ionosonde (Wuhan Ionospheric Oblique-Incidence Sounding System) and its new application in the localization of ionospheric irregularities are presented. Due to usage binary-phase-coded waveform, large signal processing gain, high Doppler range resolution, unambiguous detection can be achieved ionosonde. This also adopts peripheral component interconnect extensions for instruments (PXI) bus technology is designed as small-sized PXI-based system....
Middle-sized earth- and rock-filled dams with clay cores continue to settle by approximately 0.5–1.5% of their height for 1–3 years after construction phase. This paper investigates the use high-resolution spaceborne Synthetic aperture Radar (SAR) interferometry monitor this settlement process, case Gongming dam in China. The varieties slope foreshortening stretching radar coordinates are attributed radar’s local incidence angle dam’s heading, which analysed detail. Focusing on embankment...
Aiming at the GNSS receiver vulnerability in challenging urban environments and low power consumption of integrated navigation systems, an improved robust adaptive Kalman filter (IRAKF) algorithm with real-time performance computation complexity for single-frequency GNSS/MEMS-IMU/odometer module is proposed. The obtains scale factor by prediction residual, uses it to adjust artificially set covariance matrix observation vector under different solution states, so that changes continuously...
The COVID-19 has led to home quarantine in global scale, which increased people's need for indoor fitness activities order relieve stress/anxiety and learn knowledge well during the prevention. In this article, an augmented reality (AR) exergame is developed, mainly a kind of moving target hitting task with Lomachenkos headwear speedball as prototype. Then, comparative experiment performed test effect relieving anxiety, differences between AR virtual modes (using HTC Vive Pro) on user...
Star trackers are currently the most accurate spacecraft attitude sensors. As a result, they widely used in remote sensing satellites. Since traditional charge-coupled device (CCD)-based star have limited sensitivity range and dynamic range, matching process for tracker is typically not very sensitive to brightness. For active pixel sensor (APS) trackers, intensity of an imaged valuable information that can be identification process. In this paper improved brightness referenced algorithm...