Revolution of Telecommunication & Telephone

Communication has become an important element to human beings since their existence on earth. It is used to deliver and receive data among each other (interaction). Since communication becomes a need in human life, therefore a revolution of communication keeps expanding. 

 At the earliest stage, the way of communication is by using smoke and drum sound. Back in the time, when people saw the smoke or hear the drum, they will know something is happening. When they received the signal, people will rush to community centre to find out what exactly happened. This kind of communication has few weaknesses and people start inventing something more reliable than this.

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Global Positioning System (GPS)

Previously, we already talked about Geo-Stationary Satellite and what its purposes. Now, we will look at one of the technology used by the satellite. It is called 'Global Positioning System'. Let say when you are traveling to somewhere unfamiliar, and you do not know where exactly you are and is it the correctly heading you took? Well, introducing to Global Positioning System (GPS) that will help you to navigate and notify what is your current location. This kind of technology created to ease-up the humankind especially for travelers. The GPS becomes famous nowdays and some of you might be take it as a requirement for life.

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Space Technology: Sun-Synchronous Satellite

Sun-Synchronous Satellite is one of the satellites that moving around the earth and always gets its power source from the sun. It also called a geo-centric which includes altitude and inclination measurement. Due to the satellite is always keeps moving on, so in 24 hours the satellite will pass few countries at the same local solar system (to get solar power from the sun). And this is of course the complete one year of the satellite oscillation, is the direct correlation with actual solar time.

For a geo-stationary satellite, we all know that the purposes are for communication, coordination, TV broadcasting and earth observation. In sun-synchronous satellite case the purpose are mostly for the military and remote sensing. This kind of satellite we can use it for spying other countries.

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