Satellite Communication Networks Performance
Anubhuti Khare1, Manish Saxena2, Neha Parmar3
1Dr. Anubhuti Khare, Reader, Department of Electronics and Communication, University Institute of Technology, Rajeev Gandhi Technical University, Bhopal, (M.P.), India.
2Manish Saxena, Head of Electronics and Communication Department, Bansal Institute of Science and Technology Bhopal (M.P.), India.
3Neha Parmar, Mtech (Digital Communication), Bansal Institute of Science and Technology Bhopal (M.P.), India.
Manuscript received on October 06, 2011. | Revised Manuscript received on October 12, 2011. | Manuscript published on October 30, 2011. | PP: 1-5 | Volume-1 Issue-1, October 2011. | Retrieval Number: A0095101111/2011©BEIESP
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Abstract: A number of serious consortiums develop satellite communication networks. The objective of these communication projects is to service personal communication users almost everywhere on earth. The inter satellite links in those projects use microwave radiation as the carrier. Free-space optical communication between satellites networked together can make possible high-speed communication between different places on earth. Some advantages of an optical communication system over a microwave communication system in free space are 1) smaller size and weight, 2) less transmitter power, 3) larger bandwidth, and 4) higher immunity to interference. The pointing from one satellite to another is a complicated problem due to the large distance between the satellite, the narrow beam divergence angle, and vibration of the pointing system. Such vibration of the transmitted beam in the receiver plane decreases the average received signal, which increases the bit error rate.
Keywords: Laser communication, optical networks, satellite optical communication, vibrations.