NEC space activities for telecommunication satellite system - APRSAF
NEC space activities for telecommunication satellite system - APRSAF
NEC space activities for telecommunication satellite system - APRSAF
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<strong>NEC</strong> <strong>space</strong> <strong>activities</strong> <strong>for</strong>advanced <strong>telecommunication</strong><strong>satellite</strong> <strong>system</strong><strong>APRSAF</strong>-192011. 12. 11 – 12.12KL MalaysiaYoichi KoishiSpace Systems Division<strong>NEC</strong> Corporation
Contents1.Demand <strong>for</strong> future <strong>satellite</strong> communications2.<strong>NEC</strong> <strong>activities</strong> of communication <strong>satellite</strong>s・ WINDS・ NEXTAR-G3.Advanced products・ Deployable large reflector・ Onboard processor4. New application of communication <strong>satellite</strong>Page 2© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> communication <strong>satellite</strong>sPage 3© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> communication <strong>satellite</strong>sMobile communication with handy terminals are indispensable in adaily life, and recently, 3-dimensional high definition TV with somuch presence that we have the illusion commerce to service in<strong>satellite</strong> broadcasting.On the other hand, important role of <strong>satellite</strong> communication wasrecognized as one and only solution in a disaster relief of Tohoku.We <strong>for</strong>eseen that future <strong>satellite</strong> communication will expand followingthree axis such as 1 High mobility, 2 High throughput, 3 Flexibility.Evolutional technologies are required <strong>for</strong> those demands.Under those background, this presentation introduces the <strong>NEC</strong> <strong>space</strong><strong>activities</strong> <strong>for</strong> <strong>telecommunication</strong> <strong>satellite</strong> <strong>system</strong>.Page 4© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> <strong>satellite</strong>s communicationsHigh mobility・communications using handy phone・in<strong>for</strong>mation gathering using sensornetworkHigh throughput・af<strong>for</strong>dable internet、super HDTV、3D・high throughput <strong>satellite</strong>Current <strong>satellite</strong>communicationsFlexibility・flexible beam <strong>for</strong>ming・flexible routing (connection)Page 5© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> <strong>satellite</strong>s communicationsMarket of communication <strong>satellite</strong>sMarket is growing 15% a year.80billions US$ at 2007Revenue (in Billions US$)出 典 : State of the Satellite Industry Report 2008, Futron Co.Page 6© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> <strong>satellite</strong>s communications4200~5400kg5400kg~2500~4200kg~2500kgNumber of GEO2010 Commercial Space Transportation Forecasts, FAA20~25 <strong>satellite</strong>s were launched per year.The numbers of larger <strong>satellite</strong> are increasing.Page 7© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> <strong>satellite</strong>s communicationsSatellite Kiku-8 Thuraya-3 TerreStar-1 Skyterra-1 MEXSATLaunched Dec. 2006 Jan. 2008 July 2009 Nov. 2010 End of 2012ServiceSatelliteBusReflectoron S/CJapan(experiments)ETS-Ⅷ Busby JAXA18m byNTSpaceEurasia Africa702HP GMSby BoeingNorthAmericaLS1300 bySS/LNorthAmerica702HP GMSby BoeingMexico702HP GMSby Boeing12m by Harris 18m by Harris 22m by Harris 22m by HarrisCom.Band S: 2.5GHz L:1.5/1.6GHz S: 2GHz L:1.5/1.6GHz L:1.5/1.6GHzUserTerminalSeveral mobile <strong>satellite</strong> communication programs are per<strong>for</strong>med using large reflectors.Page 8© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> <strong>satellite</strong>s communicationsref Euro consult report 2010Ka sat multi-spot beams (example)The number of broadband IN subscriber will be increased. High gain multi-spot beam<strong>satellite</strong> are preferable to meet high capacity requirement. 4-color multi-fold frequencyreuse spot-beams covers wide service area, provides the increased number of subscribers.Page 9© <strong>NEC</strong> Corporation 2010
1.Demand <strong>for</strong> <strong>satellite</strong>s communicationsref Euroconsult report 2010Number of beamThroughput (Gbps)Launch weight160140120100806040200ANIKF2SPACEWAY6トン 級6ton classWild blueTypical high throughput <strong>satellite</strong>140Gbps140GbpsViasatJupiter80beams 80ビームIPSTARKASATref Euroconsult report 2010YaHSATNumber of beamsThroughputLaunch weightMore than 100Gbps throughput <strong>satellite</strong>s provide <strong>satellite</strong> internet. Multibeamantenna are equipped on 6ton class large <strong>satellite</strong>.Page 10© <strong>NEC</strong> Corporation 2010
2.<strong>NEC</strong> <strong>activities</strong> of communication <strong>satellite</strong>Page 11© <strong>NEC</strong> Corporation 2010
2.<strong>NEC</strong> <strong>activities</strong> of communication <strong>satellite</strong>s (heritages)COMMUNICATONYURI(BS)YURI-2a,2b(BS-2a,2b)FUJI-1,2,3(JAS-1,2,3)YURI-3a,3b(BS-3a,3b)KAKEHASHI(COMETS)KIRARI(OICETS)KIZUNA(WINDS)ENGINEERING/TESTOHSUMIJapanese 1st Satellitelaunched in 1970TANSEI-IV(MS-T4)KIKU-4(ETS-III)EARTH OBSERVATIONSAKIGAKE(MS-T5)KIKU-6(ETS-VI)KIKU-7(ETS-VII)TSUBASA(MDS-I)HIMAWARI(GMS)HIMAWARI-2(GMS-2)HIMAWARI-3(GMS-3)MOMO-1(MOS-1)HIMAWARI-4(GMS-4)MOMO-1b(MOS-1b)HIMAWARI-5(GMS-5)DAICHI(ALOS)SCIENCEYOHKOH(SOLAR-A)GEOTAILASCA(ASTRO-D)HALKA(MUSES-B)NOZOMI(PLANET-B)HAYABUSA(MUSES-C)SUZAKU(ASTRO-EII)AKARI(ASTRO-F)KAGUYA(SELENE)This document© <strong>NEC</strong> Corporationcontains proprietary2010in<strong>for</strong>mation, and except with written permission of <strong>NEC</strong> Corporation ,such in<strong>for</strong>mation shall not be published ordisclosed to others, or used <strong>for</strong> any purpose and the document shall not be duplicated in whole or in parts.Page 12 © <strong>NEC</strong> Corporation 2010
2.<strong>NEC</strong> <strong>activities</strong> of communication <strong>satellite</strong>s (heritages)Five development elements2. Ka-band Multi Port Amplifier (MPA)5. High efficiency solar paddle4. Base-band Switching SystemLaunch Date Feb. 23, 2008OrbitMassElectrical PowerAttitude ControlSystem OutlineGEO (143E)1. Ka-band Multi-beam Antenna(MBA)3. Ka-band Active Phased Array Antenna (APAA)2400 kg (DRY)8 kW @EOL4 kW(<strong>for</strong> Mission payload)3 axis Stabilization±0.05deg.(R/P)±0.15deg.(Y)WINDS (KIZUNA)Wideband inter-Networking EngineeringTest and Demonstration <strong>satellite</strong>Launch : Feb. 23, 2008 High Speed Space communication. Max Receiving : 155 Mbps Max Transmitting :- 6 Mbps <strong>for</strong> house-holds with 45-cmaperture antennas- 1.2 Gbps communication <strong>for</strong> offices with5-m antennas .Data Relay Bent Pipe Link Re-Modulating Link (ATM)Frequency U/L:27.5~28.6GHz D/L:17.7~18.8GHzAntennaBeamsData Rate(c) JAXASatellite EIRPSatellite G/TSpecification Communication LinksFixed Beams (MBA) <strong>for</strong> Japan, prospective cities in Asia regionScanning Beam (APAA) <strong>for</strong> the other areaMax 1.2 Gbps,(622Mbps×2)69.6 dBW (MBA, 24.6dBW at MPA output)54.6 dBW (APAA, at edge of FOV )> 17.9 dB/K (MBA, domestic antenna)> 7.1 dB/K (APAA, at edge of FOV )U/L: 1.5, 6, 24, 51, 155 MbpsD/L: 155 MbpsPage 13This document contains proprietary in<strong>for</strong>mation, and except with written permission of <strong>NEC</strong> Corporation ,such in<strong>for</strong>mation shall not be published or© <strong>NEC</strong> Corporation 2010disclosed to others, or used <strong>for</strong> any purpose and the document shall not be duplicated in whole or in parts.
3.<strong>NEC</strong> <strong>activities</strong> of communication <strong>satellite</strong>Advanced product・Large scale reflector・Onboard processorPage 15© <strong>NEC</strong> Corporation 2010
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 the<strong>satellite</strong> 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© <strong>NEC</strong> Corporation 2010
3.Advanced products -large scale reflector-Assemblage & Testing of BBM <strong>for</strong> 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• <strong>NEC</strong> has been built up BBM(14m: Tip to Tip) <strong>for</strong> 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© <strong>NEC</strong> Corporation 2010
3.Advanced products -onboard processor-Digital beam <strong>for</strong>mer▌Analog beam <strong>for</strong>mer▌Digital beam <strong>for</strong>mer• 10 beams• Analog device (phase shifter,amplifier, harness)⇒very complex , heavy• Fixed configuration• 100 beams• FPGA、ASIC 、ADC/DAC⇒ programmable , light• Flexible in orbit and groundswitchPhase shifteramplifierswitchoutputFPGAinputcontrollerWeight 30kg 10beams Weight 10g 100beamsPage 19© <strong>NEC</strong> Corporation 2010
3.Advanced products -onboard processor-Digital beam <strong>for</strong>mer3.3M reflectorprobearrayDigital beam <strong>for</strong>mer with reflectortest were per<strong>for</strong>med in anechoicchamber in Kyoto university.Antenna per<strong>for</strong>mance shown belowwere verified by the comparisonbetween theory(blue line) andmeasurement data (red line)*1.Exampleof dataZBeam <strong>for</strong>merXYAntenna per<strong>for</strong>mance using on board processor(digital beam <strong>for</strong>mer) wereverified in anechoic chamber.© National Institute of In<strong>for</strong>mation and Communications Technology*1) Y.Fujino,et.al.,’ Characterization of DBF/channelizer with Deployable Reflector <strong>for</strong> Satellite/Terrestrial Integrated mobile CommunicationSystem’, Proc., Joint Conference on Satellite Communications , vol. SAT2012-42, pp. 95-99, (2012/10).Page 20© <strong>NEC</strong> Corporation 2010
3.Advanced products -onboard processor-Digital channelizerAsia OceaniaJapanJapanFuture communication <strong>satellite</strong> per<strong>for</strong>ms mult-spot beams service. In those mesh connection, it is difficultto predict the beam-to-beam traffic demand <strong>for</strong> 15 years.Digital onboard channelizer per<strong>for</strong>ms the change of network connection by the command.Page 21© <strong>NEC</strong> Corporation 2010
3.Advanced products -onboard processor-Up linkbeamsDigital channelizerDown linkbeamschannelizationSpectralreconfigurationroutingUp link SpectrumDown link SpectruminputNetworkconnectionoutputPage 22© <strong>NEC</strong> Corporation 2010
4.New applications of communication <strong>satellite</strong>・sensor network (example)Page 23© <strong>NEC</strong> Corporation 2010
4.New application of communication <strong>satellite</strong>-application <strong>for</strong> data collection <strong>system</strong>-Sensor network using communication <strong>satellite</strong>Ground stationRain fallWeatherRock fallLand slideEnvironment monitoringSearch and rescuePower line monitoringData collection centerWater analysisNatural vegetationQuality of riverPipe line monitoringEnvironment monitoringWater monitoringTsunami monitoringGas/oil monitoringWide area data collections are possibleusing communication <strong>satellite</strong> with largereflectorPage 24© <strong>NEC</strong> Corporation 2010
Thank you <strong>for</strong> kind attentions!Page 25© <strong>NEC</strong> Corporation 2010
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