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Vector Fields and Differential Forms on the Orbit Space of a Proper Action

Axioms, 2021
In this paper, we study differential forms and vector fields on the orbit space of a proper action of a Lie group on a smooth manifold, defining them as multilinear maps on the generators of infinitesimal diffeomorphisms, respectively.
Larry Bates, Richard Cushman, Jędrzej Śniatycki   +2 more
doaj   +3 more sources

Improved Initial Orbit Determination Based on the Gooding Method of Low Earth Orbit Space Debris Using Space-Based Observations

Remote Sensing, 2023
Initial orbit determination (IOD), as a basis for initial orbit association and accurate orbit determination (OD), has a crucial role in the process of obtaining space debris orbit information. Among the traditional methods, the Gooding method has better
Yewen Yin, Zhenwei Li, Chengzhi Liu, Zhe Kang, Jiannan Sun, Long Chen   +5 more
doaj   +3 more sources

Overview on Space-Based Optical Orbit Determination Method Employed for Space Situational Awareness: From Theory to Application

Photonics
Leveraging space-based optical platforms for space debris and defunct spacecraft detection presents several advantages, including a wide detection range, immunity to cloud cover, and the ability to maintain continuous surveillance on space targets.
Zhe Zhang, Gaopeng Zhang, Jianzhong Cao, Cheng Li, Weining Chen, Xin Ning, Zheng Wang   +6 more
doaj   +3 more sources

A Study on the Derivation of Atmospheric Water Vapor Based on Dual Frequency Radio Signals and Intersatellite Communication Networks

Aerospace, 2023
The atmospheric total water vapor content (TWVC) affects climate change, weather patterns, and radio signal propagation. Recent techniques such as global navigation satellite systems (GNSS) are used to measure TWVC but with either compromised accuracy ...
Ramson Munyaradzi Nyamukondiwa, Necmi Cihan Orger, Daisuke Nakayama, Mengu Cho   +3 more
doaj   +1 more source

Earth Observation Mission of a 6U CubeSat with a 5-Meter Resolution for Wildfire Image Classification Using Convolution Neural Network Approach

Remote Sensing, 2022
The KITSUNE satellite is a 6-unit CubeSat platform with the main mission of 5-m-class Earth observation in low Earth orbit (LEO), and the payload is developed with a 31.4 MP commercial off-the-shelf sensor, customized optics, and a camera controller ...
Muhammad Hasif bin Azami, Necmi Cihan Orger, Victor Hugo Schulz, Takashi Oshiro, Mengu Cho   +4 more
doaj   +1 more source

Combinatorics of Orbit Configuration Spaces [PDF]

International Mathematics Research Notices, 2020
Abstract From a group action on a space, define a variant of the configuration space by insisting that no two points inhabit the same orbit. When the action is almost free, this “orbit configuration space” is the complement of an arrangement of subvarieties inside the Cartesian product, and we use this structure to study its topology. We
Bibby, Christin, Gadish, Nir
openaire   +3 more sources

Scalable and Configurable Electrical Interface Board for Bus System Development of Different CubeSat Platforms

Applied Sciences, 2022
A flight-proven electrical bus system for the 1U CubeSat platform was designed in the BIRDS satellite program at the Kyushu Institute of Technology. The bus utilizes a backplane board as the mechanical and electrical interface between the subsystems and ...
Marloun Sejera, Takashi Yamauchi, Necmi Cihan Orger, Yukihisa Otani, Mengu Cho   +4 more
doaj   +1 more source

Time-Optimal Asymmetric S-Curve Trajectory Planning of Redundant Manipulators under Kinematic Constraints

Sensors, 2023
This paper proposes a novel trajectory planning algorithm to design an end-effector motion profile along a specified path. An optimization model based on the whale optimization algorithm (WOA) is established for time-optimal asymmetrical S-curve velocity
Tianyu Liu, Jingkai Cui, Yanhui Li, Siyuan Gao, Mingchao Zhu, Liheng Chen   +5 more
doaj   +1 more source

A PI Control Method with HGSO Parameter Regulator for Trajectory Planning of 9-DOF Redundant Manipulator

Sensors, 2022
In order to solve the tracking accuracy problem of the redundant manipulator, a PI control method with Henry gas solubility optimization parameter regulator (PI-HGSO) is proposed in this paper.
Meijiao Liu, Tianyu Liu, Mingchao Zhu, Liheng Chen   +3 more
doaj   +1 more source

On a quotient space of Keplerian orbits [PDF]

Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kholshevnikov, K. V., Shchepalova, A. S., Jazmati, M. S.   +2 more
openaire   +2 more sources