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Radar, an acronym for radio detection and ranging is a system used to detect and locate objects using radio waves. Radio waves are emitted from a source towards a selected target and the time it takes for the waves to bounce back to a receiver is calculated to get the distance of the object.
The component of a radar system are; transmitter, antenna, receiver and processor.
The transmitter is the device that is used to send or emit radio waves towards the desired target.
The antenna is used to capture the received reflected radio waves for onwards transmission to the receiver.
The receiver is used to process the reflected radio waves and to extract the necessary or required information about the target.
The processor analyzes the data from the receiver and provides the desired information such as the target location, speed and direction.
The advantages of radars are; radar systems can operate in all-weather condition. Radar systems can detect targets at a long range and with high accuracy. Radar systems are relatively low cost compared with other detection methods.
The disadvantages of radar systems are; radars can be affected by interference from other radio frequencies sources. Radar systems can be affected by multipath effects, which can cause errors in target detection. Radars systems have limited resolution making it difficult to detect small targets. Some targets can avoid detection by radar systems using stealth technology.
Radar systems find widespread applications in the military for tracking, surveillance and missile guidance. They are used for aviation for air traffic control, navigation and weather detection. Radars systems are used marine navigation, weather forecasting and traffic monitoring
The future of radar system is predicated on the trends, advances and development of the following technologies ; phased array radar systems, active electronically scanned array (AESA) radar, millimeter wave radar and quantum radar and quantum radar systems and other technologies like AI/ML, internet of things (IoT), 5G and 6G networks, cyber security etc.
SOURCES:
- Radar systems by David K. Barton.
- Radar and electronic warfare systems by Richard S. Burns.
- Principles of modern radar by William L. Mervin.
- Phased array radar systems by Ahmed A Kishk.
- Introduction to radar systems by David K. Barton.
- Radar handbook by Merrilll Skeinik.
