What is Radar?
Radar operation
Education Guidelines
What is Radar? Radar operation
Hello friends how are you all? In today's topics we will know what is Radar? Radar's approach in this regard. Basically today's topic is going to be very interesting.
What is Radar?
Radar is a method that uses radio waves to determine the position, distance, height and direction of moving or stationary objects. The device used to know about the existence of a distant object is called radar. With the help of this radar, distant objects can be observed even in thick dark nights. As a result, radar acts as the third eye of an aircraft pilot or a sea captain.
Radar operation
We see any object on Earth because of light, which comes from the sun and is reflected back to our eyes. From the time of light reflection and the magnitude of light reflection, your brain can easily understand how far you are from an object and accordingly you can move past any object. Radar also works largely on this basis. Suppose a plane pilot is moving the plane in thick fog but he cannot see where he is going. Radar helps them in this situation. As a child, many of you may have put your face in front of a well and made a loud noise, and instead of making that noise, you may have heard an echo. This is also done from airplanes.
A radio wave is always thrown forward from the aircraft. After the wave is emitted, there is a delay for its reflection from an object in front. If there is reflection then it is easy to detect any object in front. You can say in a word that radar works like a bat. who navigate at night using echolocation and are aware of objects ahead. After the radio wave is generated in the radar, there is an antenna, which acts as a transmitter and shoots the wave forward into space, and the radar is always rotating so that it can catch the reflection from a large area.
The radio waves emitted by the radar travel at the speed of light until they are intercepted by someone. After being intercepted by an object, the reflected radio wave travels back at the speed of light, and by catching this return wave, it is known how far the radio wave returned from the object after being intercepted. Suppose the enemy plane is running at a speed of 3000 kilometers per hour. So there must be a faster system to catch it. But there is no problem here. Because the speed of the plane is nothing compared to the speed of light. That is, if an enemy aircraft is 160 km away, it will not take a second to detect it by radar. And in the mean time proper arrangements can be made to deal with the enemy.
The radar screen is actually like a television screen. At the center of this screen is a relatively large light spot. The point of great light is its own position. If a point of light emerges around it, then it is detected that there is an object there. Only the numbers and letters on the radar screen can tell where the object is located. In which direction and how far is it? Radar instruments can be used anywhere in the air, on ships, on sea, and on land. Ground-mounted radars can also tell the sky if enemy aircraft are approaching and, if so, how far away they are. A radar station is a small-scale radio station. From this center, radio waves are fired into the sky. When these radio waves hit a solid object from the sky, they are reflected back. This reflected wave is then picked up by the radar receiver.
With the help of this radar, a clear idea of the enemy's position is obtained. Radar is also used for many other purposes. For example, police use it to detect bikes or cars driving at illegal speeds. Even NASA uses it to get satellite maps of earth or other planets, to know the position of satellites. Avoiding modern radar is a very difficult task but the US Air Force has a sinister looking aircraft called the B2 Bomber. The structure of this aircraft is such that it can absorb the beam coming from the radar. As a result, the radar can no longer detect anything.
Radar is a remarkable device that combines science and technology.