Clark School Home UMD
ECE

ECE News Story

New ONR Contract Awarded to Professor Davis

New ONR Contract Awarded to Professor Davis

Common Aperture Optical RF Data link
Common Aperture Optical RF Data link

ECE Professor Christopher Davis and his research group, the Maryland Optics Group, together with co-principal investigator Research Professor Stuart Milner of the Department of Civil and Environmental Engineering, have been awarded a new research contract by the Office of Naval Research for their work titled “High Altitude Relay Router Package: Optical/RF Data Links.” This three year $2.7 million contract is shared with a sub-contractor, Techno-Sciences, Inc., of Lanham Maryland.

In this contract, the team will construct novel common aperture hybrid free space optical (FSO)/RF communication transceivers mounted on high performance gimbal stages. These will allow the pointing, acquisition, and tracking of directional beam wireless links operating in a physically secure manner at high data rates. Prototype FSO/RF transceivers are called CHORD (Common Aperture Optical RF Data links), and one is shown schematically in the figure to the right.

The transceiver has two large apertures, shown in red, one of which is the FSO/RF receiver sharing a common aperture, while the other is the RF transmitter. The laser transmitter (yellow) is co-directed with the RF transmitted beam. The optical receiver channel incorporates a non-imaging concentrator to provide alignment robustness and a relatively large field of view. The whole assembly is mounted on a gimbal driven by high torque “pancake” motors. Current technology should allow these hybrid transceivers to operate at data rates at least up to 1.25Gb/s and penetrate rain, clouds, and fog because of their dual laser/RF capabilities.

September 8, 2005


Prev   Next

Current Headlines

To the Stars: UMD Alumna to Be First African-American Crew Member on the International Space Station

President Obama names Michael Rotkowitz a recipient of the Presidential Early Career Award for Scientists and Engineers

Prof. Ed Ott to receive Richardson Medal (EGU) and Moser Award (SIAM)

Leite Nanophotonics Research Featured on Advanced Optical Materials Cover

Gov Hogan Announces UMD’s Role in $65M Environmental Agenda

Apple Publishes Artificial Intelligence Paper for the First Time Ever Lead by UMD Alumnus

Liu Wins 2016 IEEE Signal Processing Society Meritorious Service Award

University of Maryland to Establish Research Center of Excellence with UTC Climate, Controls & Security and Otis

News Resources

Return to Newsroom

Search News

Archived News

Events Resources

Events Calendar

Additional Resources

UM Newsdesk

Faculty Experts