Since satellite technology became a key player in communications, it has also played a crucial role in distributing television, telecommunications, and satellite internet. One essential decision is choosing the right frequency band. The two most widely used bands for satellite TV are Cband and Kuband, each with distinct characteristics and limitations depending on usage:
Satellite Television is a system for distributing television signals that sends video and audio signals from a ground station (Uplink) up to communication satellites in space. The purpose is to expand the coverage area widely. The satellite then sends signals back down to Earth (Downlink), allowing viewers to receive television signals by installing a satellite dish aimed at the target satellite. The dish connects to a Satellite Set-top Box Receiver to decode the signals into TV programs. This enables viewers to watch television anywhere within the satellites coverage area.
Satellites can orbit the Earth at various altitudes depending on their missions, including communication, observation, weather forecasting, navigation and positioning, military and security, scientific research, and more. Satellite orbits are classified by their altitude above Earth and orbital characteristics. We can divide satellite orbits into four main types as follows:
A satellite is an object sent by humans to orbit the Earth (or the Moon, Mars, etc.). Satellites are not just inventions floating in space but important tools that help humans develop technology, acquire knowledge, and ensure security for our world in almost every aspect. They are intelligent human inventions orbiting Earth, acting as the eyes and ears in space, allowing us to communicate, connect, explore, and research widely. Satellite usage can be classified into various types according to their main missions as follows:
After World War II, rocket technology advanced rapidly, especially during the Cold War between the United States and the Soviet Union. On October 4, 1957, the Soviet Union launched the worlds first artificial satellite, Sputnik 1, into Low Earth Orbit (LEO). Though it only transmitted simple beepbeep radio signals to showcase scientific and military capability, Sputnik 1 ignited the space age and sparked worldwide interest in satellite technology :contentReference
When we throw an object into the air, it moves upward until it reaches the highest pointwhere its vertical velocity becomes zero. At that point, the Earth's gravitational force pulls it back down. This behavior follows the laws of physics regarding projectile motion and gravitational acceleration acting on the object after its vertical speed reaches zero.