Satellites and Telecommunications
Our world is becoming an
increasingly complex place in which, we are very dependent on other people and
organizations. An event in some distant part of the globe can rapidly and
significantly affect the quality of life in our home country.
This increasing dependence, on
both a national and international scale, forced us to create systems that can
respond immediately to dangers, enabling appropriate defensive or offensive
actions to be taken. These systems are operating all around us in military,
civil, commercial and industrial fields.
A worldwide system of
satellites has been created and it is possible to transmit signals around the
globe by bouncing them from one satellite to an earth station and then to
another satellite and soon.
Originally designed to carry
voice messages, they are able to carry hundreds of thousands of separate
simultaneous calls. These systems are being adopted to provide for business
communications, including the transmission of voice and facsimile messages,
data and video data.
It is probable that future
wide use of satellites in the area of telecommunications will provide a great
variety of information services to transmit directly into our homes, possibly
including personalized electronic mail. The electronic computer is at the heart
of many such systems, but the role of telecommunications is not less important-
There will be a further convergence between the technologies of computing and
telecommunications. The change of this kind will lead us to the database
culture, the cashless society, the office at home, the gigabit-per-second data
One cannot doubt that the
economic and social impact of these concepts will be very significant. Already,
advanced systems of communication are affecting both the layman and the
The new global
satellite-communication systems offer three kinds of service.
The first one is voice
messages. Satellite telephones are able to make calls from anywhere on the?
Earth to anywhere else. That makes them especially useful to use in remote,
third-world villages (some of which already use stationary satellite
telephones), for explorers. Today's mobile phones depend on earth-bound
transmitters, whose technical standards vary from country to country. Satellite
telephones can solve this problem, but it is not a cheap service.
The second service is
messaging. Satellite messages have the same global coverage as satellite
telephones, but carry text alone, which is extremely useful for those with
laptop computers. As we see, the Internet works in space too. The only problem
for ordinary users is one-way transmissions. This problem is solved by using
combine transmissions, when you make a call using land communications and
receive ordered information through your satellite plate.
The third service is tracking.
Voice and messaging systems also tell their users where they are to within a
few hundred meters. Combined with the messaging service, the location service
could help rescue teams, to find lost adventurers, the police to find stolen
cars, exporters to follow the progress of cargoes and so on. Satellite systems
provide better positioning information to anyone who has a receiver for their
To my thinking, satellite
method of communication is the future for all kind of telecommunications.