Results 91 to 100 of about 11,603,365 (342)

An Adaptive Multipath Mitigation Filter for GNSS Applications [PDF]

EURASIP Journal on Advances in Signal Processing, 2008
Global navigation satellite system (GNSS) is designed to serve both civilian and military applications. However, the GNSS performance suffers from several errors, such as ionosphere delay, troposphere delay, ephemeris error, and receiver noise and multipath.
Chung-Liang Chang, Jyh-Ching Juang
openaire   +3 more sources

Miniaturized Dielectric Resonator Antenna Array for GNSS Applications

, 2016
The increase in global navigation satellite systems (GNSS) availability and services is fostering a new wave of applications related to satellite navigation. Such increase is also followed by more and more threats, aiming at signal disruption.
S. Caizzone, G. Buchner, W. Elmarissi
semanticscholar   +1 more source

Research on the Prediction Method of 3D Surface Deformation in Filling Mining Based on InSAR‐IPIM

Energy Science &Engineering, EarlyView.
Aiming at a series of defects existing in the monitoring of mining area by InSAR technology, this paper proposes an insar‐ipim model to predict the three‐dimensional surface deformation of filling mining. The parameters of the model are inversed by using the group optimization algorithm slime bacteria algorithm proposed in 2020, and the empirical ...
Meng Wang, Zhongzheng Fang, Xin Li, Jiaxu Kang, Yafei Wei, Shuai Wang, Yaqiang Zheng, Xufeng Zhang, Tianyu Liu   +8 more
wiley   +1 more source

A New Technique for INS/GNSS Attitude and Parameter Estimation Using Online Optimization [PDF]

IEEE Trans. on Signal Processing, 62 (10), 2642 - 2655, 2014, 2014
Integration of inertial navigation system (INS) and global navigation satellite system (GNSS) is usually implemented in engineering applications by way of Kalman-like filtering. This form of INS/GNSS integration is prone to attitude initialization failure, especially when the host vehicle is moving freely.
arxiv   +1 more source

Parallel Parking Path Planning and Trajectory Tracking in Narrow Environments for Autonomous Unmanned Vehicles

Optimal Control Applications and Methods, EarlyView.
ABSTRACT To address the challenge of parallel parking in narrow environments, a multi‐segment path planning method is proposed for autonomous unmanned vehicles (AUVs), which integrates circular arc and dual clothoid curves, ensuring continuous path curvature and minimal longitudinal space occupancy.
Ziyang Zhang, Guangwei Cheng, Zhanzheng Guo, Hamid Reza Karimi, Yanyang Lu   +4 more
wiley   +1 more source

Review on Laser Initiation of Energetic Materials

Propellants, Explosives, Pyrotechnics, EarlyView.
Laser ignitability of gold nanoparticles (GNPs)‐doped RDX explosive crystals. ABSTRACT Laser initiation of energetic materials has been an interesting and promising research area due to its safety and reliability features and its great potential for initiation device miniaturisation.
Xiao Fang, Jacqueline Akhavan
wiley   +1 more source

On methods for assessment of the value of observations in convection‐permitting data assimilation and numerical weather forecasting

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The routine assimilation of large numbers of observations collected from various observing systems is essential for the skill of modern numerical weather prediction (NWP). Assessment of the impact and influence of different observation types provides evidence guiding the design of future observation networks and the evaluation and improvement of ...
Guannan Hu, Sarah L. Dance, Alison Fowler, David Simonin, Joanne Waller, Thomas Auligne, Sean Healy, Daisuke Hotta, Ulrich Löhnert, Takemasa Miyoshi, Nikki C. Privé, Olaf Stiller, Xuguang Wang, Martin Weissmann   +13 more
wiley   +1 more source

MS‐SLAM: Memory‐Efficient Visual SLAM With Sliding Window Map Sparsification

Journal of Field Robotics, EarlyView.
ABSTRACT While most visual SLAM systems traditionally prioritize accuracy or speed, the associated memory consumption would also become a concern for robots working in large‐scale environments, primarily due to the perpetual preservation of increasing number of redundant map points.
Xiaoyu Zhang, Jinhu Dong, Yin Zhang, Yun‐Hui Liu   +3 more
wiley   +1 more source

A Smart Camera With Integrated Deep Learning Processing for Disease Detection in Open Field Crops of Grape, Apple, and Carrot

Journal of Field Robotics, EarlyView.
ABSTRACT Downy mildew (Plasmopara), apple scab (Venturia inaequalis), and Alternaria leaf blight are endemic diseases that affect crops worldwide. The diseases can cause severe losses in grapes, apples and carrots when not detected and treated in an early stage.
Gerrit Polder, Pieter M. Blok, Tim van Daalen, Joseph Peller, Nikos Mylonas   +4 more
wiley   +1 more source

Robust Navigation In GNSS Degraded Environment Using Graph Optimization [PDF]

arXiv, 2018
Robust navigation in urban environments has received a considerable amount of both academic and commercial interest over recent years. This is primarily due to large commercial organizations such as Google and Uber stepping into the autonomous navigation market.
arxiv