Quarterly Program Management Review (QPMR) SCaN Testbed Status D. Malarik, Project Manager D. Irimies, Deputy Project Manager November 15,

GRC Project Manager: MSC/Diane Malarik Chief Engineer: DT/Josh Freeh Safety & Mission Assurance Lead: Q/Rick Plastow NASA Customer: SCaN Program/John Rush Key Contractor(s): SpaceDOC/ZIN, GESS/Vantage Project Mission Statement: SCaN Testbed is an advanced communications lab facility installed on ISS, which provides the opportunity to develop and advance communications, navigation, and networking technologies in the dynamic operational environment of space Develop and demonstrate experiments on ISS that will advance the TRL of Software Defined Radios (SDR) and the Space Telecommunications Radio Standard (STRS) in support of future NASA missions Project Life Cycle Schedule (Governing NPR ) HTV Docked to ISS Flight System in TVAC SCaN Testbed Project MilestonesSRRIVRPDRCDRPh III Safety SARORRLaunchOpsOn-Orbit Expts ReturnFinal Report Actual/ Baseline 5/200810/20089/20094/201008/201110/20116/20127/2012Inc. 32=>01/2013N/A Installed onto ISS ELC GRC Scope:  The SCaN Testbed project is defined as the development, integration and on-orbit execution of experiments, as well as the operations and maintenance of the SCaN Testbed.  Project closeout will occur no earlier than 2018, or upon Program direction, with SCaN Testbed decommissioning, disposal, and final documentation.

First three STRS Standard Compliant radios in space – Space Telecommunications Radio Standard (STRS) is NASA’s new standard for SDRs First NASA/JPL built SDR with a waveform developed externally by someone other than the platform developer. JPL SDR received GPS signals at L1, L2, and L5 and is first civilian reception of L5 signals in space NASA’s first TDRSS Ka-band user - transmit and receive in the Ka- band frequency (Harris SDR is first NASA 26.5 GHz Ka-band transceiver in space operating with TDRSS) NASA Firsts by SCaN Testbed SCaN Bob Test Pants

Pre-Flight Accomplishments Made significant advancements in knowledge and understanding SDR development – Requirements, Production, Testing, Verification, and Validation Created expertise within GRC and across the Agency to define and develop the next generation SDRs for future missions 4

On-Orbit Accomplishments The avionics and SDRs powered up and performed smoothly during all operations. File transfers between the avionics and control center, and avionics and SDRs performed as expected. – Critical for uploading new experiment SDR files. Each Spacewire connection between avionics and SDRs were checked indicating the Spacewire cables are OK – First use of Spacewire for each SDR provider – Data flow over Spacewire will occur later in SDR commissioning The antenna pointing system was commanded to move through its positions. This was an important step to prepare for Ka-band experiments The L3 TWTA powered on and was used for Ka-band transmissions 5

On-Orbit Accomplishments Radio Frequency (RF) subsystem checkout – Approach was to verify RF path integrity post-launch, Rx only first, then duplex operations – ALL RF Subsystem Paths have been exercised in Rx mode – ALL SDRs have been exercised in Tx mode – Each SDR acquired their respective forward link waveforms and provided relative receive power or AGC telemetry – Each SDR transmitted their return link waveforms and received at WSC, verifying power amplifier and TWTA operation 6

On-Orbit Accomplishments Antenna Characterization activities underway – GPS Antenna has received L1, L2, & L5 signals – HGA, MGA, and SN-LGA link performance is ± 2dB of predictions – NEN-LGA antenna link performance is -8dB to -30dB of predictions – Each of the S-band and Ka-band RF antenna patterns will be further post- processed and evaluated over the next few weeks Antenna Pointing System (APS) Checkout and Commissioning – APS checkout completed, and initial telemetry supports a nominal and healthy APS subsystem – 2 Closed-Loop Tracking Events were fully successful (one during an ISS reboost) – APS Commissioning underway to fully characterize performance 7

Challenges Overcome Resolved subsystem current telemetry anomaly (instrumentation issue, not a safety issue) – Several days of GIU testing and simulations performed to identify cause – Circuit has voltage and temperature dependency – No documented requirements for precision and accuracy on subsystem power draw – yet required by science to understand performance of radios. – Ground SW incorporating voltage and temp data into coefficients and offsets to derive more accurate power draw telemetry 8

Challenges Overcome Resolved anomaly on critical commanding (procedure/process issue, not a safety issue) – STB mission operations inadvertently sent two critical commands from the GRC TeleScience Center (TSC) that should have been issued from the Payload Operations Integration Center (POIC) at MSFC. – STB responded nominally and there was no safety hazard but the commands should not have been accessible from the GRC TSC. – Commands removed from the configuration file and are fully removed from the database to prevent another occurrence of this issue – Procedures updated to emphasize that POIC issues those critical commands – Issue, corrective actions, and resolution reviewed and approved with the POIC team, ISS Payload Safety Review Panel, and ISS Ops Tagup - STB approved to resume nominal operations 9

Overarching Objectives and Level 1 requirements – Operate waveform modes not verified before launch (demonstrate performance on ground unit) – a key mission success objective – The CoNNeCT Project shall advance CoNNeCT SDR’s … to TRL 7 or better. – The CoNNeCT Project shall accommodate CoNNeCT Payload software upgrades or change-outs after launch – Demonstrate STRS-compliant S-band and Ka-band waveform operation – Provide a comprehensive database of performance information of STRS/SDRs or NASA in space environment Experiments 1a and 1b (S-band SDR Technology Advancement) – Characterize platform and waveform performance of GD (1a) and JPL (1b) SDR over S-band link to TDRSS and NEN – 1b: Facilitate integration of a 3rd-party waveform (GGT) using the STRS software defined radio architecture FY13 Experiments Relevance

Experiment 2 (Ka-band SDR Technology Advancement) – Characterize platform and waveform performance (e.g. BER performance, reconfigurations, SEUs) of Harris SDR over Ka-band link to/from TDRSS – Operate Forward link data rate of 3 and 12.5 Mbps (verified on flight system) – Operate Return link data rates of 12.5 and 100 Mbps (verified on flight system) – Will provide a performance baseline for TDRS-K Experiment 25a Experiment 3 (S-band & Ka-band IPv4 Baseline On-board Routing/Relay) – Demonstrate IP route between a ground and on-board network – Enables additional networking/DTN experiments by assuring a working baseline infrastructure and understood capability – Enables SGSS User Service Gateway (USG) element testing in out years – Level 1 Requirement “Communication and networking experiments shall assess…on-board routing..” FY13 Experiments Relevance

Experiment 25a – TDRS-K Check-Out Verification Support (L6 Testing) -Program track / autotrack on both STB and TDRS-K -Demonstrate that TDRS-K can acquire and successfully autotrack a Ka-band user in low Earth orbit. -This will be the first test of autotrack service with an orbiting customer during in-orbit checkout -Provide test-as-you-fly data not captured in the L5 autotrack test procedures executed by Boeing -STB offers in-orbit Ka-band user to verify KaSA services and autotrack requirements that are called out in TDRS-K Test Plan Experiment 4 (JPL GPS) – Software-defined GPS receiver at L1C/A, L2C, and L5 signals. – First L5 space receiver test sampled and recoded the GPS signals – Experiment will use GPS for orbit determination Experiment 5 (JPL DTN on radio) – DTN within JPL SDR instead of a separate onboard computer – Complete standalone SDR network/comm element. FY13 Experiments Relevance

Experiment 6 (Bandwidth Efficient, High-Rate Ka-Band TDRSS WF) – High rate, spectrally efficient waveform, goal of ~200 Mbps – 8-PSK recommended in early modulation studies to improve BW efficiency for high rate SN and NEN links that are spectrally constrained – 8-PSK or higher order modulation with LDPC coding (e.g. DVB-S2) to improve bandwidth efficiency – Evaluate performance of high-order modulation schemes and develop techniques to compensate for non-linear TWTA to maximize link efficiency Experiment tbd (SGSS Verification Support) – Provide on-orbit, unique user capability for verification testing of WSC and Blossom Point – Expt 6 WF could be used to test SGSS 8-PSK upgrade, and high rate demod at WSC (TBD) Experiment 15 (Adaptive modulation, data rate, and coding for cognitive radio) – Change waveform characteristics in response to link conditions SBIR Experiment 8 (Scintillation-hardened GPS) – Space effects on GPS – Open source GPS waveform FY14+ Experiments Relevance

General Experiment Support Activities Experiment Development System (EDS): Breadboard SDRs and Avionics Systems for Initial Experiment Development – Provides new experimenters a system for waveform development/testing Less fidelity than GIU; less restriction on scheduling/operations Working on remote access capability – IT security issues – Held EDS Design Review, proceeding with component procurement and fab Verified GIU Traveling Wavetube Amplifier Pre-Amp circuit design – For final Ka-Band Waveform V & V on the Scan Testbed GIU, the Spare LRO TWTA will be utilized. – When performing V & V, the Spare LRO TWTA will have to be driven into saturation the same amount as that of the Flight System. – Now proceeding with fabrication, assembly, and installation of the Pre Amplifier on the GIU.

General Experiment Support Activities Completed Installation, Functional Verification, and part of Performance Characterization of GIU GPS (in support of Experiment 4 / JPL GPS) GPS Antenna Installed onto Roof of B333 – integrated with GIU in high bay. 2nd TDRS K Validation Testing (in support of Expt 25a) and SGSS Checkout Meeting Held at GSFC – SCaN TB can emulate SN users to reduce operational impacts on customers during checkout – SCaN TB must align its Checkout & Commissioning to maximize benefit of emulation Experiment 25a – TDRS-K Autotrack - Kick-off meeting at GSFC held on Sep Draft Experiment Plan started

General Accomplishments & Outreach Presentation to NASA Engineering Network Telecommunications sub- Community of Practice (within the NASA Engineering Network Avionics Community of Practice), July 2012 – Lessons Learned of taking Technology to Flight…for the Principal Investigator Presentation to Center Chief Technologists, July 2012, Space Communications and Navigation SDR Testbed on ISS CoNNeCT Project Awards Picnic – Sept 20 – 270 GRC Awardees, Additional 150 awardees across NASA (JPL, GSFC, KSC, MSFC, JSC) and JAXA – Special Guest appearance and toast by Badri International Communications Satellite Systems Conference (ICSSC) and Ka-Band Conference, Ottawa Ontario. Papers presented: – Pre-flight Testing and Performance of a Ka-band Software Defined Radio – Space Software Defined Radio Characterization to Enable Reuse 16

General Accomplishments & Outreach DGA Military Antennas Conference, Washington DC - Invited Speaker and Presenter, T. Kacpura - Sept. 25 th Briefed SCaN Testbed status and FY13 plans at TSD Program Status Review Briefed at GRC 2012 SCaN TSD Annual Review – November 8 One of three GRC lead projects in current HQ OCE Audit/Survey In-Brief, Interviews, and Out-briefs 17

Technical Issues in Work Ongoing NEN power level investigation – Five Twenty-two on-orbit events, all at least ~8 dB lower than predicted – Both GD and JPL SDRs ISS inhibits (EVR, EVA, visiting vehicles) continue to challenge planning – Flight rules being re-evaluated and updated based on new/updated RF radiation limits – Continuing to coordinate with ISS Robo, JSC-EVR, POIC, MOD, et al. on other flight rules/inhibits ISS MiPROM pitch – to extend manifest (see Risk #2) STB Front End Processor (SFEP) Anomaly – SFEPs are injecting errors into the data stream at low rates on JPL and GD SDRs – GSFC contractor using spare SFEP located at GSFC to troubleshoot – WSC personnel assisting 18

Upcoming Events ISS MiPROM (Multi-Increment Payload Resupply and Outfitting Manifest) Working Group – November 2012 (date TBD) – STB Presenting to extend manifest and delay decommissioning from 2015 to 2018 (see Risk chart, Risk #2) TDRS-K Dress Rehearsal (Dry Runs) – November 15 Brief SCaN Program and HEOMD Directorate on CoNNeCT Lessons Learned and Cost Performance – dates TBD Wireless Innovation (SDR) Forum: Keynote address, STRS subtopic, 2 technical presentations, Washington, DC – January 7-10, 2013

SCaN Testbed Top Project Risks LIKELIHOODLIKELIHOOD CONSEQUENCES LxC Trend RankApproachRisk Title  1MUnderutilization of Payload  2MPremature Demanifest  3MExperimenter SW Interface (API) Approach M – Mitigate W – Watch A – Accept R – Research C – Closed Criticality  Decreasing (Improving)  Increasing (Worsening)  Unchanged N New L x C Trend High Med Low 1 32 STATUS AS OF: 11/8/12 RankConsequence(s) 1 Given a shortage of resources, there is a possibility that: Progress on experiments will be slow Payload will be underutilized Low contribution to the STRS repository 2 Given an ISS de-manifest schedule of April 2015, there is a possibility that Experiments in development will not be executed on-orbit Payload will be underutilized Low contribution to the STRS repository 3 Given a lack of an Experimenter API, there is a possibility of: STB unable to accommodate external Experimenters Increased development time for all Experimenters

SCaN Testbed Master Schedule Overview Acro-Buster ERR = Experiment Reqs Review VTR = Verification Test Review EOR = Experiment Operations Review

Back Up

Level 1 Requirement Assessment SCaN Testbed has 27 Level 1 Reqs - science type “wills” and “shalls” 19 requirements can be met with current funding – Basic S-band connection to TDRS and direct to ground – Basic Ka-band connection to TDRS – GPS L1, L2, and L5, etc...

Level 1 Requirement Assessment 8 Requirements (Experiments) need additional $ to meet the Level 1 Reqs – Delay Tolerant Networking (DTN)and Internet Protocol (IP) routing: More experiment development, SW and Expt Integration – Testbed capabilities available to industry: More SW, Expt Integration, and Expt Dev – Demonstrate various levels of compliance with STRS: More Expt development – Develop library of software devices that have legacy value: More Experimenters, SW and Comm support – Demonstrate Comm, Nav, and networking technologies: More than a single experiment – Ground based system used for testing and upload of new waveforms: More Experiment Development System support – TDRS Augmentation Service for Satellites (TASS): Funded in FY15/16 at JPL Additional funding needed to develop experiments and the infrastructure (SW and integration) to support them.

Satisfied by Checkout & Commissioning Satisfied by Experimentation > > We need Experiments to satisfy project criteria < < Mission Success Criteria Assessment