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Research of Resource Allocation and Scheduling in Spaceflight TT&C Network

Author: HuangPing
Tutor: GongChangQing
School: Shenyang Institute of Aeronautical College
Course: Applied Computer Technology
Keywords: TT \u0026 C network Resource allocation Time window Ant Colony Algorithm Crossover
CLC: V556
Type: Master's thesis
Year: 2009
Downloads: 125
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Abstract


The goal of the resource allocation and scheduling of TT \u0026 C network : scheduling specified period of time , according to satellite monitoring and control tasks demand , rational and efficient allocation of resources of the various monitoring stations , to address the growing problem of multi-satellite conflict \the effective value maximization. On the basis of the analysis of the multi-satellite mission requirements established scheduling of TT \u0026 C network resource allocation model , and the model algorithm . The main contents of this article and innovations are as follows: First, the the STK software constraints pretreatment ; elaborated on the basis of the analysis of satellite mission requirements , the main constraints of the TT \u0026 C network resource allocation and scheduling problems . For numerous complex constraints , it is difficult to quantify the characteristics of the modeling , and the idea of the first pretreated modeling solution . Preprocessing STK software to calculate the time window constraints , and then again on the basis of the calculated data to establish the mathematical model and solved . Secondly, on the basis of full study of aerospace monitoring Netcom model , perform tasks for the existing model does not consider factors such as network bandwidth and latency monitoring stations defects propose a new resource scheduling model ; resource scheduling model can be based on the different various monitoring stations network status , makes a different effect to complete the task , and that makes the completion of a task due to the impact of the network bandwidth, delay the effective value . Subsequently, the collision rate of two groups within the window of time to verify the effectiveness of the algorithm . Again, in the study of the ant colony algorithm based on the TT \u0026 C network resource allocation method based on improved ant colony algorithm ; improved ant colony algorithm can construct and adapt crossover operator and hybrid segment and its introduced to the solution of the optimization ; new solution hybridization of these new solutions , thus contributing to find a better solution . Finally, specific examples of the two sets of tasks in the VC environment research , experiments verify the validity of the model and algorithm .

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Ground equipment, test site, launch sites, space base > Ground-based measurement and control system
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