Results 111 to 120 of about 12,855 (164)

Unsupervised Video Satellite Super-Resolution by Using Only a Single Video

IEEE Geoscience and Remote Sensing Letters, 2022
Recent studies have shown that deep-learning (DL)-based methods lead to improved performance in video satellite super-resolution (SR). However, the vast majority of prior work is supervised, which is restricted to artificially generated training data (e.g., predetermined bicubic downsampling).
Zhi He, Dan He, Xinyuan Li, Jiani Xu
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Digital video broadcasting: Satellite specification

Philips Journal of Research, 1996
Digital video transmission over satellite channels is described. Many systems have so far been proposed for satellite transmission, and exist in some form. Recently, the European Telecommunications Standard (ETS 300 421) has now been accepted by the Digital Audio-Video Interface Council (DAVIC) as the world standard.
Leslie Rysdale, Paul de Bot, Samir N. Hulyalkar   +2 more
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Video-Based Satellite Attitude Determination

SPIE Proceedings, 1987
The mission lifetime of future spacecraft will be greatly extended by the routine performance of repair and resupply operations. There will be significant cost and safety advantages if these operations can be performed with minimum human involvement. A key step in any such operation will be rendezvous and docking.
Robert L. Russell, Andrew J. D' Arcy
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PBS, Satellites, and Digital Video Compression

SMPTE Journal, 1994
The Public Broadcasting Service (PBS) established American television's first satellite program distribution system in 1978. PBS presently uses one C-band transponder and six Ku-band transponders on the AT&T Telstar 401 satellite to distribute television program material to the approximately 200 satellite receiving earth stations that serve some 346 ...
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Smart multiplexing for satellite video transmission

16th International Communications Satellite Systems Conference, 1996
With the emergence of standards for digital video compression and transmission, digital video traffic over satellite links is on the rise. Link efficiencies can be greatly increased if multiple digital video streams are time-multiplexed and transmitted using a single carrier.
Ashok Rao, Kebing Yang, Krishan Bhatnagar   +2 more
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Novel satellite digital video TDMA system for business video communications

IEEE Journal on Selected Areas in Communications, 1992
The authors propose a satellite video signal transmission system that uses a time division multiple access (TDMA) scheme for digital video signal transmission and a code division multiple access (CDMA) scheme for voice signal transmission from a video signal reception-only earth station (backward voice signal transmission).
S. Kubota, H. Kazama, M. Morikura, S. Kato   +3 more
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Illegal Video Surveillance on Satellite

2012
Signal surveillance, especially the video surveillance is an important issue in satellite management and security. Lawbreakers usually steal channels of the public resources and publish their objectionable or illegal videos. In order to filter out these videos before been received, we have to recognize them in the transmission step on the satellite. In
Meiying Wei, Chen Li, Dayong Luo
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Video Traffic Management in HSDPA via GEO Satellite

2006 International Workshop on Satellite and Space Communications, 2006
This paper investigates video traffic management and packet-scheduling aspects for Satellite Universal Mobile Telecommunication System (S-UMTS) transmissions based on High Speed Downlink Packet Access via geostationary Satellite (S-HSDPA). In particular, this paper surveys resource allocation constraints to be considered for S-HSDPA and investigates ...
Giambene G., Giannetti S., Niebla C. P., Ries M.   +3 more
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International compressed video by satellite

10th International Conference on Digital Satellite Communications (ICDSC-10), 1995
NTL has been at the forefront of the development of MPEG digital video compression, launching its MPEG 1 System 2000 product in early 1993. This was the first commercial implementation of the MPEG standard for use in broadcast television applications and many organisations have since operated the system both for point to multipoint distribution to ...
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