Results 121 to 130 of about 186,788 (382)

BDS Precise Point Positioning for Seismic Displacements Monitoring: Benefit from the High-Rate Satellite Clock Corrections

Sensors, 2016
In order to satisfy the requirement of high-rate high-precision applications, 1 Hz BeiDou Navigation Satellite System (BDS) satellite clock corrections are generated based on precise orbit products, and the quality of the generated clock products is ...
Tao Geng, Xing Su, Rongxin Fang, Xin Xie, Qile Zhao, Jingnan Liu   +5 more
doaj   +1 more source

Semi-tightly coupled integration of multi-GNSS PPP and S-VINS for precise positioning in GNSS-challenged environments

Satellite Navigation, 2021
Because of its high-precision, low-cost and easy-operation, Precise Point Positioning (PPP) becomes a potential and attractive positioning technique that can be applied to self-driving cars and drones.
Xingxing Li, Xuanbin Wang, Jianchi Liao, Xin Li, Shengyu Li, Hongbo Lyu   +5 more
semanticscholar   +1 more source

Investigating the Optical and Thermodynamic Properties of 2D MoGe2P4: Potential Material for Photothermal Therapy

Nano Select, EarlyView.
• 2D MoGe2P4 demonstrates excellent optical absorption in the NIR‐I window (750–1000 nm). • High thermal conductivity (63 W/m/K) and photothermal stability over multiple laser cycles. • Efficient photothermal conversion under low laser power (0.5 W/cm2, operating λ = 808 nm), achieving therapeutic temperature thresholds within 2 min.
Sudipta Saha, Arpan Sur, Labonno Saha, Md. Kawsar Alam   +3 more
wiley   +1 more source

The importance of the timing of anchor observations in 4D variational bias correction: Theory and idealised experiments

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The successful assimilation of radiance data in modern numerical weather prediction relies heavily on the correction of radiance biases through the use of VarBC. We introduce a new theory that explains how a network of unbiased “anchor” observations can help mitigate the impact of model biases in VarBC.
Alison M. Fowler, Devon J. Francis, Amos S. Lawless, J. R. Eyre, Stefano Migliorini   +4 more
wiley   +1 more source

Role, path, and vision of “5G + BDS/GNSS”

Satellite Navigation, 2020
Communication, positioning, navigation, and decision-making abilities have evolved into Positioning, Navigation, and Timing (PNT) intelligence during the long process of human migration and hence promoted human evolution.
Jingnan Liu, Kefu Gao, Wenfei Guo, Jingsong Cui, Chi Guo   +4 more
doaj   +1 more source

Distributed SE(d)$$ \mathrm{SE}(d) $$ Formation Control of Multi‐Agent Systems Using Relative Measurements

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This study develops a solution to the distributed SE(d)$$ \mathrm{SE}(d) $$ formation control problem of multi‐agent systems using only relative measurements between agents. In this problem, poses, that is, orientations and positions, of the agents are expected to achieve desired ones.
Chunlai Peng, Kazunori Sakurama, Nichika Miyano, Mitsuhiro Yamazumi, Taiga Sugawara   +4 more
wiley   +1 more source

Integrated precise orbit determination for LEO constellation and BDS-3 MEO satellites using inter-satellite links and onboard BDS-3 observations

Satellite Navigation
By leveraging the high-precision spatial reference established with Global Navigation Satellite System (GNSS), we propose a low-ground-dependency and low-latency Precise Orbit Determination (POD) method employing onboard GNSS, Inter-Satellite Link (ISL ...
Geer Qin, Kecai Jiang, Min Li, Qile Zhao, Xin Xie, Youcun Wang, Chao Yang, Yubin Wang, Chuntao Chang   +8 more
doaj   +1 more source

An improved GNSS remote sensing technique for 3D distribution of tropospheric water vapor

Meteorological Applications, 2023
Water vapor plays an extremely important role in the monitoring and prediction of weather, and GNSS tomography can obtain 3D spatiotemporal change information and reliable water vapor profiles.
Ankang Long, Shirong Ye, Pengfei Xia
doaj   +1 more source

Aerial Localization and Navigation for Surveillance of Large, Featureless, GNSS‐Denied Maritime Environments

Journal of Field Robotics, EarlyView.
ABSTRACT In this study, we tackle the problem of surveilling a large area over the sea without access to the global navigation satellite system (GNSS) while searching for the known target vessel. The system utilizes an unmanned aerial vehicle (UAV) equipped with long‐range radio frequency (LoRa) localization and an RGB camera to detect the target ...
Marijana Peti, Lovro Marković, Ivan Lončar, Antonella Barišić Kulaš, Frano Petric, Ana Milas, Jurica Goričanec, Marko Car, Matko Orsag, Barbara A. Ferreira, Stjepan Bogdan   +10 more
wiley   +1 more source

A Generalized Concept for Clustering Capabilities of Weeding Robots

Journal of Field Robotics, EarlyView.
ABSTRACT Agriculture is undergoing a significant transformation process with the help of robots. Weeding robots have made their way into the market, and they play a crucial role in automating the weeding process in the field. This study introduces a generalized concept of autonomy levels for currently available weeding robots in the field as well as a ...
Stefan Paulus, Thomas Linkugel, Alireza Ahmadi, Chris McCool, Anne‐Katrin Mahlein   +4 more
wiley   +1 more source