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

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Presentation Transcript
slide1

Co-op Exit Presentation

Reeve Ingle

EV7 – Systems Analysis & Verification Branch

Electronic Systems Test Laboratory (ESTL)

December 11, 2006

presentation overview
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

personal background
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

first co op tour cargo integration operations do5
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

second co op tour electronic systems test lab ev7
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

third co op tour intelligent systems branch er2
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

ev7 projects fourier analysis of fsk square wave
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

method 1 closed form solution of fourier integral
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

method 2 numerical evaluation of fourier integral using symbolic mathematics program
Method 2: Numerical Evaluation of Fourier Integral Using Symbolic Mathematics Program

FSK Square Wave

x(t)

Fourier Integral

Normalized Fourier Series Coeffs.

[dBc]

9

method 3 fast fourier transform fft
Method 3: Fast Fourier Transform (FFT)

FSK Square Wave

x(t)

Sample Signal

s(t)

FFT

10

fsk square wave spectrum calculated via closed form solution
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

table excerpts for small and large beta values
Table Excerpts for Small and Large Beta Values

Small Beta Values (0 – 5)

Large Beta Values (5 – 100)

12

ev7 projects internet protocol research
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

c9 reduced gravity program
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

experience gained
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

co op activities
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

future plans
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

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

18