Results 21 to 30 of about 4,168,743 (288)

Analysis of Linear and Nonlinear Relative Orbit Dynamics for Satellite Formation Flying [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
Relative dynamic models of satellites which describe the relative motion between two satellites is fundamental for research on the formation flying. The accuracy of various linearized or nonlinear models of relative motion is analyzed and compared.
Han-Earl Park   +3 more
doaj   +1 more source

Analysis and Visualization of Vessels’ RElative MOtion (REMO)

open access: yesISPRS International Journal of Geo-Information, 2023
This research is a pilot study to develop a maritime traffic control system that supports the decision-making process of control officers, and to evaluate the usability of a prototype tool developed in this study.
Hyowon Ban, Hye-jin Kim
doaj   +1 more source

A model of relative translation and rotation in leader-follower spacecraft formations [PDF]

open access: yesModeling, Identification and Control, 2007
In this paper, a model of a leader-follower spacecraft formation in six degrees of freedom is derived and presented. The nonlinear model describes the relative translational and rotationalmotion of the spacecraft, and extends previous work by providing a
Raymond Kristiansen   +3 more
doaj   +1 more source

Rotation-Rotation Mechanism moving with Respect to a Plane [PDF]

open access: yesINCAS Bulletin, 2019
The relative motion of a robotic arm formed by homogeneous bars of different lengths and masses, hinged to each other is investigated. The first bar of the mechanism is articulated on a platform, considered for three cases: placed on the surface of the ...
Roxana Alexandra PETRE   +2 more
doaj   +1 more source

The Effect of High Ship Speed Ratio on Collision Avoidance Behavior of COLREGS [PDF]

open access: yesTransNav, 2019
The speed ratio is an important factor that must be considered when two vessels will course change to avoid collision. In the process of the research on Personifying Intelligent Decision-making for Vessel Collision Avoidance (short for PIDVCA), it is ...
Xinghua Wang, Li Na Li, Guoquan Chen
doaj   +1 more source

Theoretical Model of Tangential Contact Stiffness and Damping of Solid-Liquid Interface in Macroscopic Relative Motion

open access: yesIEEE Access, 2023
The macroscopic relative motion solid-liquid interface widely exists in the contact motion pairs of machine tools and other mechanical equipment. In order to accurately obtain the tangential contact stiffness and damping parameters, the Savkoor asperity ...
Lixia Peng   +5 more
doaj   +1 more source

An Analytic Model for Identifying Real-Time Anchorage Collision Risk Based on AIS Data

open access: yesJournal of Marine Science and Engineering, 2023
With the increasing volume of ship traffic, maritime traffic safety is facing a great challenge because the traffic in port becomes more and more crowded and complicated, which will make ship collisions more likely to happen.
Zihao Liu   +4 more
doaj   +1 more source

Real‐time moving object detection and removal from 3D pointcloud data for humanoid navigation in dense GPS‐denied environments

open access: yesEngineering Reports, 2020
Robot perception in dynamic confined unstructured environments is a challenging task due to unanticipated changes that take place in the surroundings. Although 3D perception sensors are able to capture terrain topology with high precision, the interim ...
Prabin Kumar Rath   +2 more
doaj   +1 more source

Simulation of axicon processing area on technological equipment

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2020
Annotation. An analytical expression is obtained for engineering calculation of the regularities of removing the allowance from the flat surface of the part (a rectangle in the form of a flat glass plate of considerable thickness with holes for axicon ...
A. S. Kozeruk   +3 more
doaj   +1 more source

A Development of Docking Phase Analysis Tool for Nanosatellite

open access: yesJournal of Astronomy and Space Sciences, 2020
In order to avoid the high cost and high risk of demonstration mission of rendezvous-docking technology, missions using nanosatellites have recently been increasing.
Miri Jeong, Dong-Hyun Cho, Hae-Dong Kim
doaj   +1 more source

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