Explain the functioning of
- RADAR
- SONAR
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Answers
Answer:
Radar is a detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.
Explanation:
It transfers the transmitter energy to signals in space with the required distribution and efficiency. This process is applied in an identical way upon reception.
It ensures that the signal has the required pattern in space. Generally, this has to be sufficiently narrow in azimuth to provide the required azimuth resolution and accuracy.
It has to provide the required frequency of target position updates. In the case of a mechanically scanned antenna, this associate to the revolution rate. A high revolution rate can be a significant mechanical problem given that radar antenna in certain frequency bands can have a reflector with immense dimensions and can weigh several tons.
It must measure the pointing direction with a high degree of accuracy.
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