radarlar
Radars are devices that use radio waves to detect and locate objects. They transmit radio pulses or continuous waves, receive echoes from targets, and process the returned signals to determine range, bearing, elevation, and sometimes velocity. Range is inferred from the time delay between transmission and reception, while velocity can be measured with the Doppler shift of the reflected signal. Direction is established by scanning the antenna pattern or by electronic beam steering in phased arrays.
The technology emerged in the early 20th century and was significantly developed during World War II, leading
A typical radar system comprises a transmitter, receiver, antenna, and signal processor. Performance is described by
Applications span aviation (air traffic control), maritime navigation, meteorology, defense, remote sensing, and automotive safety. The