Satellite Communications (Covering latest Digital Satellite Technologies And Systems) by Dr. D. C. Agarwal Book Summary:Satellite communication is of much importance for both the national and international communications which may be in the form of telephone transmission, television and radio program distribution, computer communications, ISDNs, martime navigation and military command and control. Satellite communication is a very vast topic and involves several aspects of communication technology including both the analog and digital techniques. Communication engineers are therefore supposed to have appropriate knowledge in satellite technology, link design and operations. Knowledge in the additional topics such as those or radio wave propagation, antennas, orbital mechanics, modulation, detection, coding, radio electronics, microwave techniques, lasers and fibre optic communication etc. is also required. Intercooperation between the mechanical engineers, electrical engineers, communication engineers and aeronautical engineers is extensively needed for rocket technology for lauching and manning the satellite.
For special purposes, other active elements have been used. For example, in the early days of the satellite communication, parametric amplifiers were used. The core circuit was a diode whose capacitance was changed by an RF signal created locally. Under certain conditions, this RF signal provided energy that was modulated by the extremely weak satellite signal received at the earth station.
satellite communication book by dc agarwal pdf download
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