Results 21 to 30 of about 6,017 (50)

Predicting Spacecraft Telemetry Data by Using Grey–Markov Model with Sliding Window and Particle Swarm Optimization

open access: yesJournal of Mathematics, 2023
Predicting telemetry data is vital for the proper operation of orbiting spacecraft. The Grey–Markov model with sliding window (GMSW) combines Grey model (GM (1, 1)) and Markov chain forecast model, which allows it to describe the fluctuation of telemetry
Liang Ren   +3 more
doaj   +1 more source

An Analytical Method for Solar Heat Flux in Spacecraft Thermal Management Under Multidimensional Pointing Attitudes

open access: yesEnergies
In order to provide a theoretical basis for the thermal analysis and management of spacecraft/payload interstellar pointing attitudes, which are used for inter-satellite communication, this paper develops an analytical method for solar heat flux under ...
Xing Huang   +5 more
doaj   +1 more source

Study on thermal analysis simulation and test of propellant refueling process for optical module

open access: yesXibei Gongye Daxue Xuebao
Propellant refueling is important for long-term operation of the optical module in orbit. However, its thermal environment is harsher than on previous missions. Therefore, thermal control of the entire process is required.
LU Wei   +4 more
doaj   +1 more source

Research of the Technology and Application of Spacecraft Assembly Data-package Construction Based on MBD

open access: yesMATEC Web of Conferences, 2016
In order to implement spacecraft assembly based on MBD, this article proposes a method to construct data-package automatically based on 3D model. First, an Assembly Digital Mock-up (ADMU) is constructed.
Wan Bi Le, Chen Chang Yu, He Wen Xing
doaj   +1 more source

Research of the Technology and Application of 3D Model Based Assembly Structural Process Design for Spacecraft

open access: yesMATEC Web of Conferences, 2016
In order to implement spacecraft assembly based on MBD, this article proposes a method of structural process design based on 3D model. First, an Assembly Digital Mock-up (ADMU) is constructed.
Wan Bi Le, He Wen Xing, Chen Chang Yu
doaj   +1 more source

Design of Temperature Fluctuation Test Platform Based on Radiation Heat Transfer

open access: yesMATEC Web of Conferences, 2019
The optical characteristics of the space science detectors are very sensitive to the temperature fluctuation. In order to study the effect of it, a method to simulate the temperature fluctuation was put forward in this paper, and the feasibility of this ...
Xiao Han   +3 more
doaj   +1 more source

Design Approach for CCSDS Complied Command Operation and Frame Operation Procedure for Integrated Spacecraft Checkout [PDF]

open access: yesEAI Endorsed Transactions on Cloud Systems, 2018
Consultative Committee for Space Data Systems (CCSDS) complied Telemetry and Telecommand Processor’s (TTCP) development was taken up by Spacecraft Checkout Group (SCG) of U. R. Rao Satellite Centre, Indian Space Research Organization (ISRO) as a part of ‘
Parul Sharma, Sangeetha K., Vithal Metri
doaj   +1 more source

Research on Torque Loading Technology Based on L Lever in Spacecraft Bolt

open access: yesMATEC Web of Conferences, 2015
As the main form of structure assembly, the stability of bolt joint is directly related to the performance of spacecraft. This essay is used to analyze the cause of standard torque spanner which is not suitable to the tightening torque and summarized ...
Song Xiaohui, Liu Zhibin, Liu Zhe
doaj   +1 more source

Orbit Design Elements of Chang’e 5 Mission

open access: yesSpace: Science & Technology, 2021
The three key orbit design technologies employed in the Chang’e 5 mission are identified and discussed in this paper: orbit design for lunar orbit rendezvous and docking, orbit design for precision lunar landing and inclination optimization, and orbit ...
Zhong-Sheng Wang   +3 more
doaj   +1 more source

An optimized run-length based algorithm for sparse remote sensing image labeling

open access: yesDefence Technology, 2022
Labeling of the connected components is the key operation of the target recognition and segmentation in remote sensing images. The conventional connected-component labeling (CCL) algorithms for ordinary optical images are considered time-consuming in ...
Shen-shen Luan   +5 more
doaj   +1 more source

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