Satellite Laser Communications Training
Satellite Laser Communications Training Course Description
This Satellite Laser Communications Training will provide an introduction and overview of laser communication principles and technologies for unguided, free-space beam propagation. Special emphasis is placed on highlighting the differences, as well as similarities to RF communications and other laser systems, and design issues and options relevant to future laser communication terminals.
This course will provide you the knowledge and ability to perform basic satellite laser communication analysis, identify tradeoffs, interact meaningfully with colleagues, evaluate systems, and understand the literature.
• How is a laser-communication system superior to conventional technology?
• How link performance is analyzed.
• What are the options for acquisition, tracking and beam pointing?
• What are the options for laser transmitters, receivers and optical systems.
• What are the atmospheric effects on the beam and how to counter them.
• What are the typical characteristics of laser communication system hardware?
• How to calculate mass, power and cost of flight.
With onsite Training, courses can be scheduled on a date that is convenient for you, and because they can be scheduled at your location, you don’t incur travel costs and students won’t be away from home. Onsite classes can also be tailored to meet your needs. You might shorten a 5-day class into a 3-day class, or combine portions of several related courses into a single course, or have the instructor vary the emphasis of topics depending on your staff’s and site’s requirements.
Introduction. Brief historical background, RF/Optical comparison; basic Block diagrams; and applications overview.
Link Analysis. Parameters influencing the link; frequency dependence of noise; link performance comparison to RF; and beam profiles.
Laser Transmitter. Laser sources; semiconductor lasers; fiber amplifiers; amplitude modulation; phase modulation; noise figure; nonlinear effects; and coherent transmitters.
Modulation & Error Correction Encoding. PPM; OOK and binary codes; and forward error correction.
Acquisition, Tracking and Pointing. Requirements; acquisition scenarios; acquisition; point-ahead angles, pointing error budget; host platform vibration environment; inertial stabilization: trackers; passive/active isolation; gimbaled transceiver; and fast steering mirrors.
Opto-Mechanical Assembly. Transmit telescope; receive telescope; shared transmit/receive telescope; thermo-Optical- Mechanical stability.
Atmospheric Effects. Attenuation, beam wander; turbulence/scintillation; signal fades; beam spread; turbid; and mitigation techniques.
Detectors and Detections. Discussion of available photo-detectors noise figure; amplification; background radiation/ filtering; and mitigation techniques. Poisson photon counting; channel capacity; modulation schemes; detection statistics; and SNR / Bit error probability. Advantages / complexities of coherent detection; optical mixing; SNR, heterodyne and homodyne; laser linewidth.
Crosslinks and Networking. LEO-GEO & GEO-GEO; orbital clusters; and future/advanced.
Flight Qualification. Radiation environment; environmental testing; and test procedure.
Eye Safety. Regulations; classifications; wavelength dependence, and CDRH notices.
Cost Estimation. Methodology, models; and examples.
Terrestrial Optical Communications. Communications systems developed for terrestrial links.
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