29-04-2014, 12:45 PM
Iridium satellite
Iridium satellite.pptx (Size: 377.41 KB / Downloads: 16)
Introduction:
Iridium is a satellite is wireless communications network designed to allow a wide range of mobile telephone services including
Voice
data
networking
geo location
fax capabilities
It covers the whole earth including poles ,oceans &airways
With this system caller can call to any person, anywhere at any time in the world.
TYPICAL COMMUNICATION MODEL:
Transmitter is a collection of electronic devices that converts source information to a signal that is more suitable for transmission over a given transmission medium.
The transmission medium provides a means of transferring signals from a transmitter to a receiver.
A receiver is a collection of one or more electronic devices or circuits that accept the transmitted signals from the transmission, medium and converts them back to the original form.
SATELLITE COMMUNICATION:
A Satellite communication system consists of one or more
satellite space vehicles
ground based station
user network of earth station
A satellite communication system with single-channel satellite transponder can communicate with one transmitter and receiver
each earth station can communicate with only one other earth station.
To overcome this disadvantage multiple-channel satellite transponders are introduced
HISTORY BEHIND ITS NAME:
The system is called iridium after the element on the periodic table with the atomic number 77, because iridium’s original design called for 77 satellites.
The final design, however, requires only 66 satellites.
The satellites are frequently visible in the night sky as satellite flares
Iridium communications service was launched on November 1, 1998.
Conclusion:
Since the satellites has already been launched it is important that this system is applied as much as possible.
Innovative Applications like “seismic alert of earthquakes and tsunami” should be brought out which serves the real purpose of being an engineering application.