A5067747276- Indoor and Outdoor Localization Technologies
- GNSS positioning and interference
- Technology and Security Systems
- Underwater Vehicles and Communication Systems
- Target Tracking and Data Fusion in Sensor Networks
- Earthquake Detection and Analysis
- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- Inertial Sensor and Navigation
- Wireless Sensor Networks and IoT
- Ionosphere and magnetosphere dynamics
- Direction-of-Arrival Estimation Techniques
- Ecology and biodiversity studies
Wuhan University
2022-2023
Nanchang University
2020-2023
In this paper, motivated by the fact that precisely positioning a flying unmanned aerial vehicle (UAV) passive radio frequency (RF) measurements are being troubled extreme non-line-of-sight (NLOS) environments, we propose 3D joint time difference of arrival (TDOA) and angle (AOA) NLOS localization method for UAVs using three receivers. Compared with existing schemes based on received signal strength (RSS), TDOA, (TOA), AOA methods, advantage proposed is do not need many receivers or priori...
Substorms have been found to play an important role in ionospheric electrodynamics at low and equatorial latitudes. In this study, we investigated the possible influence of substorm on generation spread F (ESF). Coherent backscatter radar (JULIA) incoherent scatter measurements between 2000 2017 Jicamarca Radio Observatory (11.95° S, 76.87° W, ~0° dip lat) are used. statistical analysis, 12,525 h ESF considered divided into two groups based their local time: post-sunset (18–24 LT)...
The real-time information of the unknown ionospheric environments is difficult to obtain, plaguing timely and accurate geolocation high frequency (HF) sources. In this paper, we propose an improved HF skywave source method based on time-difference-of-arrival (TDOA) with semidefinite programming (SDP), model signal propagation paths as significant non-line-of-sight (NLOS) biases. With method, no priori about ionosphere, especially virtual heights reflection, necessary while accurately...
Large-scale real-time ionospheric information is difficult to obtain promptly, plaguing the timely and accurate geolocation of high-frequency (HF) sources in unknown ionosphere environments. In this letter, we propose a novel HF skywave source method based on time difference arrival with semidefinite programming, no priori about necessary. simulations, proposed compared existing methods detailed error distribution maps are given. experiments, I/Q data captured from same at different times...
Abstract Freshwater mussels are one of the most diverse and endangered faunas worldwide. Owing to continuing global biodiversity loss, it is essential identify protect populations that not severely affected by human disturbances ensure natural genetic diversity inevitably lost. The generation baseline data will help guide species conservation restoration plans in Yangtze River Basin where freshwater facing multiple threats strong declines have been observed. was assessed using 818 mtDNA...