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President, Mooradian & Associates · Dr. Mooradian has over 40 years of experience providing concept innovation, technical leadership, program development and management of R&D through hardware...
- 262
- Mooradian & Associates, Inc.
- California State University, Fresno
- La Jolla, CA
View Greg Mooradian’s profile on LinkedIn, a professional community of 1 billion members.
- 404
- Derwood, Maryland, United States
- 406
From 1994 to 1998, Dr. Mooradian served as Executive VP, CTO and Vice Chairman of the Board for Science and Technology International. He was responsible for all projects and grew STI by a factor of 10 in four years.
Dr. Greg Mooradian President and Chief Technical Officer at Mooradian & Associates Inc
- What Are You Going to Hear?
- data exfiltration
- Architecture, Depth and Data Rate Requirements Define the OLC Geometry
- through the air-water interface propagation channel is much more
- scattered beam
- • Downlink data rate is nominally limited by
- Cloud spatial spreading (~ 1.5 x T)
- with depth (day)
- UW OLC Performance Modeling Is Well Understood & Experimentally Verified
- Frequency-Doubled Yb Fiber APLA Laser *
The Navy’s view of connecting the C4ISR network Possible underwater Optical Laser Communications (OLC) architectures supporting a wide range of critical Naval missions An overview of the fundamental physics of the all-underwater and underwater/above-water propagation channel and the impact on communications performance The state of the art in OLC p...
• The “enabling technology” is available NOW CONOPS Must Adapt To Today’s Operational and (Most Importantly) Today’s Fiscal Realities
Two OLC comm modes: (1) all-underwater (terminal-to-terminal), and (2) through the air-water interface (UW terminal comm with an above-water terminal) All-underwater OLC propagation phenomenology and OLC technology can be significantly different than the through-the air/water-interface link Solar background is generally not a dominating noise sourc...
much more dependent on geometry and the environment Requirement for daytime operation drives many of the technology and architecture options (e.g., narrowband optical filters and high peak-power lasers) Generally demands much more SWaP and complicated technology (e.g., SLC) To be efficient (especially daytime), requires collection of multiple scatt...
back towards laser transmitter Multiple forward scattered beam Direct, unscattered beam
thickness, τ optical T physical thickness at height H
Anamorphic Tx zoom and Rx FOV correction vs. nadir angle can increase performance substantially for large angles Spatial spreading in clouds reduces received energy/pulse, increases required A/C Rx FOV and complicates scan strategy Water turbidity rapidly degrades SNR (i.e., depth & data rate) attenuated
“Green” littoral water is more turbid than open-ocean “blue” water and generally gets clearer (i.e., “bluer”) with depth Sea state is very much a second order effect and may help at large nadir angles (clear) Multiple scattering in sea water (K & D) defines sub Rx FOV
Jerlov Water Clarity Map from MODIS Spectral Imaging Satellite
* Adaptive Pulsewidth Laser Architecture (APLA) dynamically matches laser PRF and PPM pulsewidth to instantaneous channel characteristics
Gregory C. Mooradian PhD's 3 research works with 50 citations and 122 reads, including: Initial neural net construction for the detection of cervical intraepithelial neoplasia by fluorescence...
Dr. Greg Mooradian. President and Chief Technical Officer at Mooradian & Associates Inc. SPIE Involvement: Author Publications (4) ...
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