Quarterly Program Management Review (QPMR) SCaN Testbed Status David Irimies, Project Manager April 23,

GRC Project Manager: MSC/David Irimies Chief Engineer: DT/Josh Freeh 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 2016, or upon Program direction, with SCaN Testbed decommissioning, disposal, and final documentation. Rev 3/31/13 2

Checkout and Commissioning is Complete Ready for experimentation – Characterizing performance of platforms and waveforms – TDRS 8/9/10 – JPL S-band Captures NEN-LGA characterization in work and will complete in time for experiments that utilize it – Performance measurements from testing with Wallops Ground Station appear to be typically 8-10dB lower than predicted – Investigation ongoing, including recent JPL S-band Capture Testing tests with LGA – Low impact so far due to testing with other antennas that has been scheduled 3

SCaN Commissioning Collaboration SCaN Testbed continues to supply SDR Commissioning information to SCaN Program Systems Engineering (PSE) Project – To validate PSE’s simulation / emulation systems modeling of SCaN Network – PSE shadowed some Commissioning events – SCaN Testbed provided actual and predicted commissioning data and reports – SCaN Testbed provided post-processing routines Return Link Recorded C/N Forward Link Received Power Tracking data for the pass TDRSS satellite used for the data relay. STK Model report for the pass. 4

CNAV - New Planned Experiments Air Force GPS Directorate implementing CNAV (Civil Navigation) GPS Test Program Large part of CNAV Test Program’s success is performance evaluation and utility assessment of L2C and L5 navigation signals SCaN Testbed to take part in data collection for CNAV SCaN Testbed to also test MITRE GPS waveform upgrade 5

SBIR and University - New Planned Experiments SCaN Testbed received two SBIR Phase 1 awards – GPS Jammer Detection – Secure DTN Networks Two University Experiments to become part of project: – Florida Institute of Technology and Harris Corp - Adaptive, continuous phase modulated waveform using the Harris SDR – Virginia Tech University - signal recognition and classification using the Harris and/or JPL SDR 6

SCaN Testbed Support to Network Services – TDRS 8/9/10 Demonstration of utility to SCaN systems SCaN Testbed provided on-orbit data to assist SN’s investigation Autotrack receiver bias resolved – SCaN Testbed ops analyzed the delogs – SCaN Testbed ops generated the approximate TDRS pointing error and correlated with SCaN Testbed’s Antenna Power Quality Measurement signal Completed TDRS (Antenna) Characterization 7

SCaN Testbed Support to Network Services – TDRS-K Checkout (Expt 25a) Completed on-orbit dry run / data collection for upcoming TDRS-K Checkout, in coordination with TDRS-K project –SCaN Testbed Ka-band auto-track operating nominally with TDRS 8/9/10 Expt 25a Overview: -Program track / autotrack on both SCaN Testbed and TDRS-K -Demonstrate that TDRS-K can acquire and successfully autotrack a Ka-band user in low Earth orbit. -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 -SCaN Testbed offers unique in-orbit Ka-band user to verify KaSA services 8

SCaN Testbed Support to Network Services – TDRS-K Checkout (Expt 25a) Harris Continuous Wave Mode successfully tested with autotrack on-orbit during dry-run Held Experiment Operations Review with TDRS-K Exploring simultaneous S & Ka band test 9 On-Orbit Dry Run Test: TDRS Autotracked on 15 Mbps “CW” SCaN Testbed then went to closed loop, then the data rate was changed to 100 Mbps. All per TDRS-K procedure timeline.

SCaN Testbed Support to Network Services – Ka-band TDRSS Digital System Distribution (TDSD) SCaN Testbed providing benefit to SN Digital Architecture Testing Project at White Sands TDSD is a digital architecture for distribution of the IF signal to the White Sands ground station receivers WSC to configure ground system and schedule 225 & 650 MHz services TDSD requested SCaN Testbed to help test Ka-band return to WSC IF port at ≥100 Mbps ~6 week turnaround from initial discussion to ops 10 Return Test signal generated by the SCaN Testbed’s Harris SDR, and will propagate through the WSC TDSD system to the recorder TDSD digitized IF architecture

First reconfiguration and waveform upgrade Launch waveform upgraded to improve performance and augment capability: Glenn, Goddard, TDRS (GGT) Waveform, on 4/17 – Implements SNR and power estimators – Implements soft-decision Viterbi decoding – Fixes BER flaring issue Embodiment of Space Telecommunications Radio Standard (STRS): third party waveform developer – In-flight SDR reconfiguration to improve performance and functionality – Use of the SDR engineering model to develop capabilities never tested directly on flight hardware – Prediction of flight radio performance based on engineering model performance 11

NEN-LGA - Data Testing with JPL Ground Station What: JPL Ground Station to SCaN Testbed signal capture events – SCaN Testbed received an S-band signal from a JPL ground station, over three events – Supported multiple objectives: Gathering independent performance data on ground-facing S-band low gain antenna Evaluating low-horizon-angle communication links for current and future missions. How: Good interaction, planning, and preparedness between teams – Experiment Integration – Principal Investigator – Mission Operations – External PI Team (JPL) From concept to on-orbit (3/20 – 3/21) in ~6 weeks Our on-orbit experience is making this possible 12

NEN-LGA - Data Testing with JPL Ground Station 13 Developed powerful models and tools to predict and track performance during an event

Experiment 6: Bandwidth-Efficient, High Rate Waveform at Ka-band Overview: 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 – Evaluate performance of high-order modulation schemes and develop techniques to compensate for non-linear TWTA to maximize link efficiency Successfully built and tested Harris Test Waveform Ported test modulator with BPSK, QPSK, 8-PSK, 16-APSK over to Harris SDR breadboard platform and characterized performance Obtained and built latest SpaceWire and LDPC 7/8 Cores from GSFC

Experiment 4: JPL GPS Overview: Software-defined GPS receiver at L1C/A, L2C, and L5 signals Preparing GPS for on-orbit ops Next step is on-orbit upgrade in mid May Latest JPL Waveform can now process L5 signal

Experiment 8: Scintillation Hardened GPS (SBIR P2) Hosted CommLargo Phase 2 SBIR Kickoff at GRC – Toured SCaN Testbed Facilities (Control Center, Highbay/GIU) – Discussed Expt 8’s requirements of SCaN Testbed, schedule, risks, etc. CommLargo on-orbit preparation testing on 4/24 and 4/25 16

Payload Avionics Software Upgrade First Payload Avionics Software upgrade completed final verification testing. Includes: – Necessary support for Expt 4 (JPL GPS) –Gaining operational efficiencies –Corrective actions to critical commanding and updating calibration coefficients Completed on-orbit test plan –On orbit tests to verify subsystems and interfaces still work as intended Upgrade tentatively for mid May 17

General Accomplishments & Outreach Pitched to ISS MiPROM (Multi-Increment Payload Resupply and Outfitting Manifest) Working Group – January 30 – SCaN Testbed presented to extend manifest and delay decommissioning from 2015 to 2018 –Outcome: extended through FY18 –Allows SCaN opportunity to extend program if warranted Wireless Innovation (SDR) Forum: Keynote address, STRS subtopic, 2 technical presentations, Washington, DC – January 7-10, 2013 –Rich Reinhart, Keynote Speaker –Jennifer Nappier, Paper/presentation on GD Automatic Gain Control (AGC) work –Dale Mortensen, JPL SDR development –Sandra Johnson, SCaN Testbed / STRS sessions and booth IEEE Aerospace Conference, Big Sky –Presented on GD AGC Work –Presented on “Unique Challenges Testing SDRs for Space” 18

SCaN Testbed Top Project Risks LIKELIHOODLIKELIHOOD CONSEQUENCES LxC Trend RankApproachRisk Title  1M Out-Year Funding Profile Insufficient to Execute Project  2M Funding Insufficient to Fully Support Experimenter Requests  3C Premature SCaN Testbed Disposal by ISS 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, 2 3 STATUS AS OF: 4/11/13 RankConsequence(s) 1 Given an out-years (FY14+) resource shortage, there is a possibility that: SCaN Testbed Expt integration and operations will intermittently stop Progress on experiment development will be even slower Lower contribution to the STRS repository 2 Given a resource shortage to fully support experimenter requests, there is a possibility that: SCaN Testbed unable to timely accommodate external Experimenters Increased development time and effort for all Experimenters CLO- SED Given an ISS disposal schedule of April 2015, there is a possibility that Experiments in development will not be executed on-orbit Payload will be underutilized Lower contribution to the STRS repository 19

Experiment Operations – Look-Ahead 20

Summary SCaN Testbed checkout and commissioning complete SCaN Testbed supporting SCaN projects Beginning SCaN experiments, as well as other government agency, university, and industry experiments 21