A5001830307- Inertial Sensor and Navigation
- Indoor and Outdoor Localization Technologies
- Robotics and Sensor-Based Localization
- GNSS positioning and interference
- Laser-Plasma Interactions and Diagnostics
- Advanced MEMS and NEMS Technologies
- Robotic Mechanisms and Dynamics
- Advanced Optical Sensing Technologies
- Geophysics and Sensor Technology
- Combustion and Detonation Processes
- 3D Surveying and Cultural Heritage
- Advanced Vision and Imaging
- Target Tracking and Data Fusion in Sensor Networks
- Energetic Materials and Combustion
- Satellite Communication Systems
- Space exploration and regulation
- Acoustic Wave Resonator Technologies
- Pulsed Power Technology Applications
- Gait Recognition and Analysis
- Optical Systems and Laser Technology
- Magnetic Bearings and Levitation Dynamics
- Hydraulic and Pneumatic Systems
- Opportunistic and Delay-Tolerant Networks
- High-Velocity Impact and Material Behavior
- Geophysics and Gravity Measurements
Ministry of Industry and Information Technology
2024
Xi'an Jiaotong University
2021-2024
Beijing Institute of Technology
2022-2024
Guangdong Medical College
2024
Shenzhen University
2024
State Key Laboratory of Electrical Insulation and Power Equipment
2022
Guizhou Electromechanical Research and Design Institute
2021
Beihang University
2020
Wuhan University
2017-2019
University of Calgary
2019
The integration of Global Positioning System (GPS) real-time kinematics (RTK) and an inertial navigation system (INS) has been widely used in many applications, such as mobile mapping autonomous vehicle control. Such applications require high-accuracy position information. However, continuous reliable positioning is still challenging for GPS/INS urban environments because the limited satellite visibility, increasing multipath, frequent signal blockages. Recently, with rapid deployment...
Precise position, velocity, and attitude is essential for self-driving cars unmanned aerial vehicles (UAVs). The integration of global navigation satellite system (GNSS) real-time kinematics (RTK) inertial measurement units (IMUs) able to provide high-accuracy solutions in open-sky conditions, but the accuracy will be degraded severely GNSS-challenged environments, especially integrated with low-cost microelectromechanical (MEMS) IMUs. In order navigate GNSS-denied visual–inertial has been...
Dual-frequency Global Positioning System (GPS) Real-time Kinematics (RTK) has been proven in the past few years to be a reliable and efficient technique obtain high accuracy positioning. However, there are still challenges for GPS single-frequency RTK, such as low reliability ambiguity resolution (AR) success rate, especially kinematic environments. Recently, multi-Global Navigation Satellite (multi-GNSS) applied enhance RTK performance terms of availability AR. In order further multi-GNSS...
As an ancient protein family, the WD40 repeat proteins often play essential roles in fundamental cellular processes eukaryotes. Although investigations of eukaryotic have been frequently reported, prokaryotic ones remain largely uncharacterized. In this paper, we report a systematic analysis and detailed comparisons with ones. About 4,000 identified, accounting for 6.5% all WD40s. While their abundances are less than 0.1% most prokaryotes, they enriched certain species from Cyanobacteria...
The WD40 proteins, often acting as scaffolds to form functional complexes in fundamental cellular processes, are one of the largest families encoded by eukaryotic genomes. Systematic studies this family on genome scale highly required for understanding their detailed functions, but currently lacking animal lineage. Here we present a comprehensive silico study human family. We have identified 262 non-redundant and grouped them into 21 classes according domain architectures. Among them, 11...
It is well-known that the Global Navigation Satellite System/Inertial System (GNSS/INS) /Vision integration has been increasingly used for safety-critical applications like self-driving cars. However, performance of GNSS/INS/Vision degrades due to unknown faults. Therefore, it essential develop integrity monitoring algorithms integrated navigation system. A new protection level (PL) formula ensure state estimation proposed, which can be calculated by relation between filter error and An risk...
This paper investigates the sensing of user's uplink channel and location in terahertz extra-large reconfigurable intelligent surface (XL-RIS) systems, where unique hybrid far-near field effect beam squint caused by XL array aperture as well bandwidth are overcome. Specifically, we first propose a joint scheme, which consists location-assisted generalized multiple measurement vector orthogonal matching pursuit (LA-GMMV-OMP) algorithm for estimation (CE) complete dictionary based localization...
The combination of energetic material (EM) and an electrical wire explosion (EWE) is important way to achieve effective release conversion chemical energy, e.g. by generating strong underwater shock waves (SWs) that can be used for dynamic reservoir fracturing in unconventional gas exploitation. This letter proposes a mud-like EM composed nitromethane, aluminium copper oxide powder, which detonated directly tungsten explosion. detonation successive deflagration result notably enhanced SWs:...
The combination of energetic material (EM) and electrical wire explosion (EWE) is an efficient economical method to generate strong shock waves (SWs). idea resembles the exploding bridge-wire (EBW) detonator, but in this case, EWE operates with much higher energy storage, EMs lower sensitivity can be directly ignited, which provides a practical compromise among limited SWs, safe usage explosives. hybrid load based on ignited has been successfully applied for reservoir stimulation...
Smartphone-based pedestrian dead reckoning (PDR) has been widely used indoors for continuous localization. However, the specific tracking solutions under different modes are vulnerable to mode transition and thus degrading performance. The robustness of navigation may be weakened due mix smartphone motions walking patterns. Due this challenge, most existing PDR methods assume that is carried in a certain pose, such as handheld horizontally, swinging, calling, pocketed, ignoring short period...
Due to the low-quality sensors of consumer-grade devices, such as smartphones, traditional point-based visual–inertial simultaneous localization and mapping (SLAM) techniques applied smartphones commonly suffer from low accuracy potential tracking divergence. Incorporating more measurements can enhance performance robustness, but additional computational consumption may not satisfy real-time requirements in mobile location-based services, pedestrian positioning. For SLAM applications focused...
Abstract In August 2023, Xiaomi unveiled the Redmi K60 Ultra, first multi-frequency smartphone integrated with BeiDou-3 Navigation Satellite System Precise Point Positioning (PPP-B2b) services and employing PPP technology as primary positioning method. The enhancement service is provided by Assisted Global (A-GNSS) location platform developed China Academy of Information Communications Technology. signaling interaction between server users strictly adheres to Third Generation Mobile...
Simultaneous localization and mapping (SLAM) is currently a widely used technology for indoor positioning. Many studies have focused on the smartphone-based navigation its portability feature-rich sensors. But due to low-quality sensors complex environments, current SLAM-based positioning using smartphones still poses great challenges, such as inherent cumulative global drift potential divergence facing texture-less regions. For regular gait characteristics of pedestrians when naturally...
Abstract Underwater electrical wire explosion (UEWE) is an efficient source of underwater shock waves (SWs). In order to efficiently simulate the interaction between UEWE SW and structures, a coupled model that includes electric circuit, exploding surrounding water established based on user-subroutines provided by commercial explicit dynamics software ANSYS AUTODYN. The modeling starts from room temperature using tabular wide-range metal equation state (EOS) conductivity data. Experimental...
This article presents a comprehensive study on the emerging near-space communications (NS-COM) within context of space–air–ground–sea integrated network (SAGSIN). Specifically, we firstly explore recent technical developments NS-COM, followed by discussions about motivations behind integrating NS-COM into SAGSIN. To further demonstrate necessity comparative analysis between and other counterparts in SAGSIN is conducted, covering aspects deployment, coverage, channel characteristics, unique...
Foot-mounted inertial pedestrian positioning system (FIPPS) is increasingly important in the Internet of Things (IoT) and smart cities because passive, anti-interference, fully automatic advantages. However, FIPPS faces problem unknown initial positions accumulative errors practical applications, which makes trajectory inaccurate unable to be matched a well-defined coordinate system. A seamless indoor–outdoor method based on smartphone precise point (PPP)/3-D map/barometer augmentation...
In an intelligent information society, indoor pedestrian navigation systems based on inertial sensors are becoming increasingly important due to the advantages of autonomy and continuity in positioning. However, these cannot estimate altitude because divergence channels complexity movement patterns. To address this challenge, article proposes estimation method utilizing measurement unit (IMU) sensor installed pedestrian's foot. Specifically, calculates height difference steps with system...