Radar uses radio waves to detect and study distant targets. It works by transmitting radio pulses toward a target and measuring the time it takes for the echo signal to return. This round-trip time is used to calculate the target's range. Different radar frequencies are used for various applications such as air traffic control, weather monitoring, and mapping. Radar can also provide information about target attributes like size, speed, and features through analysis of the reflected radio signals.

1. Radar Many in a series of McGourty-Rideout Productions

4. Radar Frequencies

5. Radar Frequency Bands Frequency Wavelength 1 mm 1 km 1 m 1 nm 1 MHz 1 GHz IR UV 10 9 Hz 0 1 2 3 4 5 6 7 8 9 10 11 12 30 20 10 8 6 5 4 3 9 7 Allocated Frequency (GHz) Wavelength (cm) X-Band C-Band S-Band L-Band UHF VHF Visible 10 12 Hz Ku K Ka W 1  m

10. Atmospheric Effects