DeepSpaceNetworkUpdate

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PeteVrotsos,SCaNDeputyProgramManagerforNetworkOperationsPlanetaryScienceSubcommitteeoftheNACScienceCommitteeSeptember30,2016

NACSCFindingontheDeepSpaceNetwork

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SCaNResponsetoNACFinding:ExecutiveSummary

• TheScienceCommitteefindingsislinkingaoneyearappropriationsreductiontooverallabilityoftheDSNtoperformitsday-to-dayfunctions.

• SCaNhasconductedthoroughreviewoftheDSNperformancefromDec2015-Feb2016performanceinresponsetotheNACPSSfinding

• SCaNhasnotdetectedanysystemicincreasingmissiondataloss

• The2016appropriationscuttotheDSNwas3.8%.– Reductionswereappliednon- daytodayoperationsandmaintenanceactivities

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EventAnomalies

• TheeventthattriggeredtheNACSCwasaseriesofanomaliesatCanberraDeepSpaceCommunicationsComplex(CDSCC)duringthethirdweekofJanuary.

• Eventswerenotdrivenbyobsolescence– TwofailuresweretheresultofinfantmortalitywithDSS-35(newest

BeamWaveGuide(BWG)antenna)– SitewidesoftwareanomalyatCDSSClocalareanetwork(LAN)

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TheDSNhasmetALL L1,L2,L3missioncriticaleventsfrom2011– 2016

DSNProficiencyAugust2015– August2016

5Serviced37missionswith98.6%proficiency

DSN12-monthRollingProficiencyAug15 98.4%Sep-15 99.2%Oct-15 99.2%Nov-15 98.6%Dec-15 97.3%Jan-16 97.6%Feb-16 97.8%Mar-16 99.0%Apr-16 99.1%May-16 98.9%Jun-16 98.2%Jul-16 99.0%Aug-16 99.4%

94.0%

95.0%

96.0%

97.0%

98.0%

99.0%

100.0%

Aug2015

Sept2015

Oct2015

Nov2015

Dec2

015

Jan2016

Feb2016

Mar2016

Apr2

016

May2016

June2016

July2016

Aug2016

95%:NASARequirement

98.6%

CassiniTLMPerformance

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75%

80%

85%

90%

95%

100%

0

5

10

15

20

25

30

35

40

45

50

Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16

%TLM

Perform

ance

Numbero

fSup

ports

Cassini&DSNTLMPerformanceSeptember2015- Present

PlanetaryScienceMissionTLMPerformance

7

75%

80%

85%

90%

95%

100%

0

200

400

600

800

1000

1200

Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16

%TLM

Perform

ance

Numbero

fSup

ports

PlanetaryScience&DSNTLMPerformanceSeptember2015- Present

DSNScheduledDowntime

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2016/2017DowntimeTimelineStatusMonth-End

CTT-22CompatibilityTestTrailer

JPL,PasadenaDeepSpaceOperations

Center(DSOC)

DeepSpaceNetworkAssets

MIL-71KSCLaunch

SupportFacility

JPL,MonroviaNetworkOperationsControl

Center(NOCC),DTF-21

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DSS-2534m(BWG-2)

DSS-1534m(HEF)

DSS-2434m(BWG-1)

Goldstone,California

DSS-2634m(BWG-3)

DSS-1334mBWGTestFacility

DSS-1470m

SignalProcessingCenterSPC-10

DSS-2334m(BWG-4)

Madrid,Spain

DecommissionNov2019DSS-65

34m(HEF)

DSS-5434m(BWG-1)

DSS-6370m

SignalProcessingCenterSPC-60

DSS-5534m(BWG-2)

DSS-5634m(BWG-3)

DSS-5334m(BWG-4)

Canberra,Australia

DecommissionNov2016DSS-45

34m(HEF)

DSS-3434m(BWG-1)

DSS-4370m

SignalProcessingCenterSPC-40

DSS-3534m(BWG-2)

DSS-3634m(BWG-3)

DSS-3334m(BWG-4)

Station XX/Ka S Ka2

DSS-26 - 11/2017 (TBD)

DSS-35 10/2014 - -

DSS-36 10/2016 10/2016 (TBD)

DSS-56 10/2019 10/2019 10/2019

DSS-53 10/2020 - -

DSS-33 10/2022 - -

DSS-23 10/2024 - -

DecommissionNov2017

DSNApertureEnhancementProject

• SCaNdevelopedDAEPinordertorespondtoconcernsoveraging70minfrastructure

• New34meterBWGantennasystemswillfeaturehigherreliability,enhancedperformance,reducedoperationsandmaintenancecosts.

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DSS-35 CDSCC October2014 Operational

DSS-36 CDSCC October2016 Operational

DSS-56 MDSCC October2019 Facility workstarted

DSS-53 MDSCC October2020 Facilityworkstarted

DSS-33 CDSCC October2022 Budgeted

DSS-23 GDSCC October2024 Planned

CanberraDeepSpaceCommunicationsComplex(CDSCC)GoldstoneDeepSpaceCommunicationsComplex(GDSCC)MadridDeepSpaceCommunicationsComplex(MDSCC)

ProgramImplementationReviewFindings

• SCaNrecentlyunderwentaProgramImplementationReview(PIR).TheboardofthePIRfoundseveralstrengths.Twooftheminclude:– “Exemplarysuccessinbringingdatadownonall3networks,consistentlyexceeding95%requirement.”

– “Demonstratedabilitytomanagedwindlingbudgetsbyfullydeployingannualfundingandmanagingflexibilityneedswithprocessofprioritizationofprojectsandabilitytoadjustschedules.”

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NASAwww.nasa.gov

NASA Space Communications and Navigation

https://www.nasa.gov/scan Facebook: NASASCaNTwitter: @NASASCaN

National Aeronautics and Space Administration

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