Optical Satellite Communication | Electrical Seminar Topic
Optical Satellite Communication
Satellite cross links generally require narrower bandwidths
for increased power concentration. We can increase the power concentration by
increasing the cross link frequency with the same size antenna. But the source
technology and the modulation hardware required at these higher frequency bands
are still in the development stage.
Use of optical frequencies will help to overcome this
problem with the availability of feasible light sources and the existence of
efficient optical modulation communications links with optical beams are
presently being given serious considerations in inter-satellite links. And
establishing an optical cross link requires first the initial acquisition and
cracking of the beacon by the transmitting satellite followed by a pointing of
the LASER beam after which data can be modulated and transmitted.
