Atmospheric Turbulence Studies of a 16 km Maritime Path
NAVAL RESEARCH LAB WASHINGTON DC ADVANCED SYSTEMS TECHNOLOGY BRANCH
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The Naval Research Lab NRL is currently operating a lasercom test facility LCTF across the Chesaepeake Bay between NRLs Chesapeake Bay Detachment NRL-CBD and NRL-Tilghman Island. This lasercom test facility has successfully demonstrated 32 km retro-reflected links at data rates up to 2.5 Gbps. Along with lasercom link studies, atmospheric characterization of the NRL-CBD to Tilghman Island optical path has been investigated. These studies range from passive optical turbulence monitoring based on angle-of-arrival measurements of a spotlight s apparent motion, to intensity and angle-of-arrival measurements of a retro-reflected laser beam. Currently the LCTF is being upgraded from a retro-reflected link to a direct one-way link from NRL-CBD to NRL-Tilghman Island. Initial measurements of atmospheric turbulence effects in this one-way configuration have recently been performed. Results of these past and current atmospheric turbulence studies are presented.
- Atmospheric Physics