HIGH ALTITUDE BALLOON DDF

Team Leader: Josh Beighle

Group Members: Adam Chen, Aaron Seyfried

Faculty Advisors: Dr. John Wu, Dr. Joseph Slater

Industry Advisors: Bruce Rahn, Nicolas Baine

April 20, 2012

OverviewTest Experiment DesignTesting Measurement DataDemonstrationKit IssuesSolutions

Experiment Design

• Red dot represents handheld CW beacon

• Person in car drives in oval formation around operator

• Corresponding LEDs light up in the direction the signal is coming from accordingly

• System will be utilized in foxhunting upon completion

0º

270º 90º

180º

Experiment Design

Experiment Design

Experiment Design

Testing Measurement Data

• Measurement data for the small scale testing will be mostly qualitative data

• Testing will focus on relative accuracy and consistency of the system

• This data will reflect the usability of our system at the CW beacon frequency (146.565 MHz, 2-meter band) and further calibration techniques

Testing Measurement DataTime (minutes) Degrees Approximated Distance Approximated Location

0102030405060708090

100Note: One data sheet for each kit. Time and location will be determined from measurements from both kits

Demonstration• “Beeline Big Beacon” • Programmable 440 MHz beacon• Adjustable frequency for package dissemination• Morse Code reads: W1WSU Command

Issues

•First Kit Issues• Finding the CW Signal• Audio signal sporadic

•Second Kit• Assembled, not functional• Pending functionality of first kit• Once problems are diagnosed, second kit will become

functional quickly

Solutions

SolutionsFunctional rigging persistsUtilize instructional videos

Documentation provided from Ramsey Electronics is vague

Further testing will continue with CW beacon source

Yagi Antennas• Reconfigured RG58 connection point

SponsorsThe Ohio Space Grant Consortium (OSGC)Wright State University Curriculum Development GrantNational Science Foundation (NSF)

SummaryTest Experiment DesignTesting Measurement DataIssuesSolutions

Questions

• Josh Beighle: beighle.3@wright.edu• Adam Chen: chen.83@wright.edu• Aaron Seyfried: awseyfried@gmail.com