Communications Technology and Security
Alma V. Moran – almavmoran@gmail.com - Electrical Engineering – SWC – Android Development
Luke Carpenter – lukecarpenter@gmail.com – Computer Science – SWC – Signal Processing
Daniel Gonzales - gonzalesdp@gmail.com – Physics – SWC - Photonics
Fernando Solorio - fernando.solorio@gmail.com – CIS – SWC - Cryptography
NSF Grant # DUE0653234
Methods: Signal
Processing
Transmit data in
watermark signal;
• Vary characteristics
of watermark
• Change power of
watermark
Introduction
Our projects covered a wide range of fields
including photonics, signal processing,
cryptography, and software development.
Our internships were based at SPAWAR
Systems Center Pacific (SSC PAC). SSC
PAC is the US Navy’s research,
development, acquisition, test and
evaluation facility on the west coast. The
research done at SPAWAR focuses on
Command, Control, Communications,
Computers, Intelligence, Surveillance and
Reconnaissance (C4ISR).
Methods: Cryptography
• Encrypt multicast data
using a preplaced key
• Exchange data over an
untrusted or lowerclassification network
Methods: Photonics
The purpose of the project is
to develop a system that can
instantaneously capture a
wide band of radio
frequencies using photonics.
A photonic is a device that
uses photons (particles of
light to process information.
It is analogous to electronics
that utilize electrons in the
same way. To perform this
task a radio signal is
duplicated many times into
the visible spectrum through
the aid of high power lasers.
A different portion of teach
copy is then filtered and
Methods: Android
Development
Through the use of Java, the
Android Virtual Device and a
cell phone an application
was developed, tested and
trouble shot to conform with
the specifications needed to
establish communication
with security devices.
Performance of the with and
with out with algorithm
Performance at 200 ms
Results: Signal
Processing
• Find optimum
transmission length
and sequences
• Watermark key
works best at a
tone duration of
200ms and 3 digits
Fig 1. (a) original signal, (b)
signal duplication, (c) filter
and processing,
(d) analysis.
Sample android code
Results: Cryptography
• Provide encryption on
both wired and wireless
capabilities
analyzed simultaneously.
Acknowledgments
Special thanks to Ayax Ramierez, Dr. Raga Bakhiet, Eric Pamintuan. Thank
you to our Mentors Steve Nunn, Dr. Sanja Zlatanovic, Jose Romero-Mariona,
and Sarah Lauff. We would like to thank SSC PAC, the STEP Partnership of
San Diego (SPSD), the Lipp Family Foundation, Southwestern College, the
Mathematics Engineering and Science Achievement (MESA) programs, and
the Department of Homeland Security.
This research internship was funded by the National Science Foundation NSF
(DUE 0653234) and the Lipp Family Foundation
Results: Android
Development
The application successfully
communicated with the
required security devices.
Results: Photonics
• Produced a “comb” of
self seeding pump
lasers duplicated from
original two pump
lasers (Fig. 2)
• Assembled filtering
device for analyzing
duplicated signals
"Fig. 2 Frequency
comb generated by
two boosted pump
lasers. The red line
indicates that a range
of about 100 nm is
with the optimal
OSNR (Optical Signal
to Noise Ratio). This
covers over 30 peaks
and copies of the
original signal.
Conclusion
This summer our projects worked on creating technologies and
devices to improve communications and communications security.
These technologies will provide direct support for the Department of
Defense, the Department of Homeland Security, and the Warfighter.
This opportunity gave us an exciting window into how technical
research is conducted in an applications oriented organization.