NEC space activities for telecommunication satellite system - APRSAF

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3.Advanced products-large scale reflector-ϕ30m class LDRTri-Fold Single Module ApplicationLDR Gain50.4dBi @ 2.17GHz(Boresight Peak Gain)When in the out of range of allground station,the frequency is automaticallyswitched to S-band,and communicate thru thesatellite within usual powerconsumption.Supposed Service CoverageGround StationGround NetworkLand ServicePopular Cellular Phone•13 Beams•9.6kbps/Voice•10,000ch/SimultaneouslyMarine ServiceDedicated Terminal•7 Beams•9.6kbps/Voice•24kbps/VideoPage 16© NEC Corporation 2010
3.Advanced products -large scale reflector-Assemblage & Testing of BBM for large reflector~September 2011:Assemblage of Surface & Back Structure~August 2011:Assemblage of Surface~October 2011:Deployment Demonstration~July 2011:Assemblage & Deployment Test of Deployable Back Structure• NEC has been built up BBM(14m: Tip to Tip) for large scale reflector undera contract with JAXA, and it has successfully evaluated thru tests by March2012.Surface AdjustmentDeployment TestVibration TestDeployment Test (Post)~March, 2012:Successfully CompletedPage 17© NEC Corporation 2010
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Page 3 and 4: 1.Demand for communication satellit
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Page 19 and 20: 3.Advanced products -onboard proces
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Page 23 and 24: 4.New applications of communication
Page 25: Thank you for kind attentions!Page

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