Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraftshipsspacecraftguided missilesmotor vehiclesweather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the object(s). Radio waves (pulsed or continuous) from the transmitter reflect off the object and return to the receiver, giving information about the object’s location and speed.  ( wikipedia )

Some people are sensitive to Radar.  Here are some videos for those interested :

 

Radiation pulses from Radar

345 uV Digitmeter

 

Radiation pulses from Radar

2000uW/m2   gigahertz solutions HF 32D