›› 2012, Vol. 32 ›› Issue (2): 10-16.doi: 10.3780/j.issn.1000-758X.2012.02.002

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 BudgetAnalysisandSimulationofInter-satelliteLinkinWalker-δConstellation

Han Songhui 1,2,Gui Qingming 2,Li Jianwen 1,Du Yuanlu 2   

  1. (1InstituteofSurveyingandMapping,InformationEngineeringUniversity,Zhengzhou450052)
    (2InstituteofScience,InformationEngineeringUniversity,Zhengzhou450001) 
  • Received:2011-09-26 Revised:2012-04-25 Online:2012-04-25 Published:2012-04-25

Abstract: There is a need for more discussion on the other transmission loss and a reasonable transmission power of inter-satellite link (ISL). Firstly, the criteriafor ISL establishment were given under the agreement of short average distance and small range of ISL azimuth, elevation angleanddistance.Secondly,  the budget of the ISL, the free spacepropagationlossandothertransmissionlosswerediscussed,andthereferencevalueor the formulaofthesetransmissionlosseswasgivenlater.Furthermore,areasonabletransmissionpowerwas given bythe probabilisticknowledgeundertheconditionthatthemathematicalexpectationofthepracticaldatawasequaltotherateddataofthetransferrate.Then,thevarianceformulaofthedatatransmissionratewasderived.Finally,therangesofazimuth,elevationangleanddistanceofISLintheWalker27/3/1constellationwereanalyzedbysimulation.Theimpactofdifferentcarrierfrequenciesanddataratesonthetransmissionpowerwerediscussed,andareasonabletransmissionpowerwasalsodetermined.

Key words: Inter-satellite link, Transmission loss, Transmission power, Walker-&delta, constellation