Computer Science – Performance
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.893d&link_type=abstract
IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,
Computer Science
Performance
Scientific paper
systems. Needs of applications such as real-time surveillance of dynamic situations on the ground or in near space, video data on event scenes in search and rescue, real-time video communications with spacecraft, etc. can only be provided with signal carrying frequencies in the optical wavelength range. Today's optical free-space communication technologies promise to reach the performance quality of the ground optical fiber networks. Recent developments based on using the optical phase conjugation and photo- dynamic holography phenomena allow transmission of high data volumes (such as dynamic imagery and real-time video communications) between moving communication terminals. surveillance and communications with spacecraft (both within and beyond solar system) using non-linear optical systems. The advantage of the discussed concept is that it may not require lasers (as sources of the signal-carrying electromagnetic waves) on both communicating terminals. A combination of a limited number of ground-based laser stations with compact, light-weight passive non-linear optical systems on high and low orbits or on long-range spacecraft provides for reliable, ultra-high rate, economic systems for voice, data and video communications as well as real-time observations of Earth, near and deep space. presented.
Dudelzak Alexander E.
Jha V. K.
Pasmanik Guerman A.
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