Results 81 to 90 of about 959,413 (134)

Autonomous navigation system [PDF]

, 1981
An inertial navigation system utilizing a servo-controlled two degree of freedom pendulum to obtain specific force components in the locally level coordinate system is described.
Merhav, S. J.
core   +1 more source

Ship Autonomous Berthing Strategy Based on Improved Linear-Quadratic Regulator

Journal of Marine Science and Engineering
There has been significant interest in the research field of ship automatic navigation, particularly in the area of autonomous berthing. To address the key challenges of path planning and control during ship berthing, we propose an enhanced Linear ...
Jian Yin, Guoquan Chen, Shenhua Yang, Zeyang Huang, Yongfeng Suo   +4 more
doaj   +1 more source

Phoenix-XNS - A Miniature Real-Time Navigation System for LEO Satellites [PDF]

, 2006
The paper describes the development of a miniature GPS receiver with integrated real-time navigation system for orbit determination of satellites in low Earth orbit (LEO).
Gill, Eberhard, Montenbruck, Oliver
core  

Real-Time Monitoring Method for Traffic Surveillance Scenarios Based on Enhanced YOLOv7

Applied Sciences
Due to the impact of scale variation of vehicle targets and changes in traffic environments in large-scale traffic monitoring systems, vehicle target detection methods often face challenges.
Dexin Yu, Zimin Yuan, Xincheng Wu, Yipen Wang, Xiaojia Liu   +4 more
doaj   +1 more source

A Novel Action-Aware Multi-Agent Soft Actor–Critic Algorithm for Tight Formation Control in USV Swarm

Journal of Marine Science and Engineering
Tight-formation control is a key technology for unmanned surface vehicle (USV) swarms in harbor navigation, cooperative berthing, and operations in hazardous environments, yet achieving reliable obstacle avoidance while maintaining formation stability ...
Yongfeng Suo, Kuoyuan Zhu, Weijun Wang, Shenhua Yang, Lei Cui   +4 more
doaj   +1 more source

Sensitivity analysis of helicopter IMC decelerating steep approach and landing performance to navigation system parameters [PDF]

Results of a study to investigate, by means of a computer simulation, the performance sensitivity of helicopter IMC DSAL operations as a function of navigation system parameters are presented.
Karmali, M. S., Phatak, A. V.
core   +1 more source

Maritime Trajectory Forecasting via CNN–SOFTS-Based Coupled Spatio-Temporal Features

Sensors
Spatio-temporal features are crucial for maritime trajectory forecasting, especially in scenarios involving curved waterways or abrupt changes in ship motion patterns.
Yongfeng Suo, Chunyu Yang, Gaocai Li, Qiang Mei, Lei Cui   +4 more
doaj   +1 more source

A Comprehensive Signal Quality Assessment for BDS/Galileo/GPS Satellites and Signals

Remote Sensing
With the modernization of global navigation satellite systems (GNSS), especially the rapid development of the BeiDou Navigation Satellite System (BDS), more observations of satellites and signals have become available.
Yijun Tian, Guorui Xiao, Rui Guo, Dongqing Zhao, Lu Zhang, Jie Xin, Jinglei Guo, Yuechao Han, Xuefan Du, Donghan He, Zheng Qin   +10 more
doaj   +1 more source

MANSEE data analysis results [PDF]

Results of the data reduction and analysis for the Marine Navigation Systems Evaluation Experiment (MANSEE) are presented. Topics discussed include: the MANSEE test; the navigation sensors which were exercised; the ground truth instrumentation and the ...
Gibbs, B., Hatch, W.
core   +1 more source

Navigation and attitude reference for autonomous satellite launch and orbital operations [PDF]

The navigation and attitude reference performance of a strapdown system are investigated for applications to autonomous satellite launch and orbital operations.
Kau, S. P.
core   +1 more source