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Design and Implementation of Free Space Simplex Video – Laser Communication system | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 27, Issue 12, 2009, Pages 2465-2478 PDF (462.02 K) | ||
| DOI: 10.30684/etj.27.12.16 | ||
| Authors | ||
| Hyder Abdul; Ridha Salih; Labeab O. A. Ghani | ||
| Abstract | ||
| The optical communication system consists of a transmitter uses a laser beam of a wavelength 650 nm as a carrier in free space, and a receiver uses PIN diode as a detector . In both sides Intensity modulation (IM) technique has been used to transmit video signal of a frequency range (0~5) MHz band width. The video signal fed by camera. The transmitted signal amplified and converted to a modulated intensity of laser beam and sent to the receiver, the receiver converts the laser signal to a weak electrical signal by the detector; the signal will be amplified and converted back to an analogue signal to produce the original transmitted signal, and monitored by TV set in (black and white ) . The transmission range was 5 m , that can be developed letter for longer range. | ||
| Keywords | ||
| carrier; Intensity modulation; video signal | ||
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