1 / 19

Co-op Exit Presentation Reeve Ingle EV7 – Systems Analysis & Verification Branch Electronic Systems Test Laboratory

Co-op Exit Presentation Reeve Ingle EV7 – Systems Analysis & Verification Branch Electronic Systems Test Laboratory (ESTL) December 11, 2006 Presentation Overview Personal Background Previous Co-op Tours EV7 Projects Fourier Analysis of FSK Square Wave Internet Protocol Research

liam
Download Presentation

Co-op Exit Presentation Reeve Ingle EV7 – Systems Analysis & Verification Branch Electronic Systems Test Laboratory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Co-op Exit Presentation Reeve Ingle EV7 – Systems Analysis & Verification Branch Electronic Systems Test Laboratory (ESTL) December 11, 2006

  2. Presentation Overview • Personal Background • Previous Co-op Tours • EV7 Projects • Fourier Analysis of FSK Square Wave • Internet Protocol Research • Experience Gained • Co-op Activities • Future Plans • Acknowledgements • Questions 2

  3. Personal Background • Hometown: Carrollton, Georgia • Graduated from Carrollton High School in 2003 • Valedictorian in class of 250 students • Eagle Scout • Senior at Georgia Tech in Atlanta, Georgia • Electrical Engineering Major, Spanish Minor • Outstanding ECE Sophomore Award, Dean’s List • Teaching Assistant – Mathematics & Spanish Courses • IEEE • Eta Kappa Nu Electrical Engineering Honor Society • Tau Beta Pi Engineering Honor Society • Graduate in Spring 2008 3

  4. First Co-op Tour Cargo Integration & Operations - DO5 • Japanese Experiment Module • Electrical Power System Drawings • JAXA/NASA End-to-End Activation Test • STS-121 Transfer Team Support • Console Operator Training • Researched Methods to Clean Clothing in Space • Website Design Zero-G Clothes Washer JEM ACO Website 4

  5. Second Co-op TourElectronic Systems Test Lab – EV7 Multipath Fading Simulator • Multipath Fading Simulator • Firmware Radio Testing • High-Impedance Buffer Troubleshooting and Repair Buffer Box Repair 5

  6. Third Co-op TourIntelligent Systems Branch – ER2 SCOUT Dashboard Unit • RF Interference Troubleshooting • Created Spectrum Map of SCOUT Wireless Systems • Installed BPF and Ferrite Bead • SCOUT Dashboard Unit • Speedometer • Odometer • Battery Voltage • Temperature • Emergency Stop LEDs • Desert RATS Field Test Support RF Mapping of SCOUT Rover 6

  7. EV7 Projects – Fourier Analysis of FSK Square Wave Purpose • FM Transmitter Configuration • ESTL currently configures FM transmitters using a sinusoidal modulating signal • Many FSK transmitters have digital front ends that only support pulse modulation • Allows beta values (Δf / R) to be configured using square wave (‘1010’ or ‘1100’ pattern) modulating signal • Analysis of FSK Transmission Sequences • Preamble: Digital ‘1010’ training sequence • Results in additional power levels at center frequency and harmonics 7

  8. Method 1: Closed-Form Solution of Fourier Integral Pulse Train RF Pulse Train ReconstructedSignal FSK Square Wave Fourier Coefficients Sum of 2 RF Pulse TrainsOffset 180° 8

  9. Method 2: Numerical Evaluation of Fourier Integral Using Symbolic Mathematics Program FSK Square Wave x(t) Fourier Integral Normalized Fourier Series Coeffs. [dBc] 9

  10. Method 3: Fast Fourier Transform (FFT) FSK Square Wave x(t) Sample Signal s(t) FFT 10

  11. FSK Square Wave Spectrum Calculated via Closed-Form Solution Components occur at fc+ n*fm fm=R/2 for ‘1010’, fm= R/4 for ‘1100’ 11

  12. Table Excerpts for Small and Large Beta Values Small Beta Values (0 – 5) Large Beta Values (5 – 100) 12

  13. EV7 Projects – Internet Protocol Research Internet Protocol (IPv6) • New Header Format – Extension Headers • Encapsulating Security Payload (ESP) • Authentication Header (AH) • Larger Address Space • Better QoS Support Using Flow Label Field • Extendibility IPv6 Packet Header 13

  14. C9 Reduced Gravity Program • Member of Proposal Selection Committee • NASA Mentor for Middle School C9 Reduced Gravity Team • Experiment: Reaction rate of a chemical process in microgravity versus earth gravity • Authored Test Equipment Data Package (TEDP) • Provided technical guidance and advice • Physiological training in hypobaric chamber • Traveled to Seattle, Washington to meet with school, work on experiment, and finalize TEDP • Fly with team on C9 in February 14

  15. Experience Gained • Through-Hole Soldering Training per NASA Flight Standards • Lab Test Equipment • Mathematical Theory of FM & FSK Transmission Schemes • Leadership Experience as NASA Mentor for C9 Reduced Gravity Team Through-Hole Soldering Design Board 15

  16. Co-op Activities • Lectures • John Young • Tours • Neutral Buoyancy Lab • Co-op Committees • Housing Guide • Co-op Webmaster • Social • Co-op Softball Team • Wings Over Houston Airshow • Backpacking in Guadalupe Mountains National Park • Carlsbad Caverns • Mountain Biking in Memorial Park • Half Marathon Race • Triathlon • SCUBA Certification 16

  17. Future Plans • Spring Classes at Georgia Tech • Teaching Assistant for Mathematics Course • Summer 2007 – 5th Co-op Tour • Graduate in May 2008 • Graduate School and Graduate Co-op • Applying to Georgia Tech, MIT, Stanford, and Berkley for Grad School • Begin Grad School in Fall 2008 17

  18. Acknowledgements • Chatwin Lansdowne • B.G. Smith • Ned Robinson • Cathy Sham • Brian Collier • Fred Shetz • Rick Rodriguez • ESTL 18

  19. Questions? 19

More Related