Longitudinal (radio) waves are the type of waves used in radar, and they are microwave frequency waves, which are high frequency and have short wavelengths.
A link is provided to the Wikipedia article on radar. You can surf on over and check it out. A link is also provided to a related question.
Microwaves. The same ones used in your microwave oven.
They're shorter than radio stations and longer than heat.
radar
Electromagnetic waves.
Inches (microwave) vs. Feet (Radar).
radio waves
Highly energetic compared to radio waves.
Another name for radar waves is radar systems or electromagnetic waves.
ultrasonic waves are not used but radio waves are used in radar technology because ultra sonic waves generally create an image out of the object while we have to confine our study to the geometrical measurements only
Electromagnetic waves with a wavelength from a mm up to a few cm are used in radar. They will be reflected from a discontinuity in the electromagnet properties of space. e.g. a metal surface.
RADAR = RAdio Detection And RangingRadio waves in the microwave band are used to measure the speed of cars using a technique called "Doppler RADAR", by measuring the change in frequency of the returned waves.These waves are electromagnetic waves.
radar
RADAR
Radar stands for RAdio Detection And Ranging. So ... radio.