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
Radar is based on Microwave and detects the change in dielectric constant where as Ultrasonic is based on Sound Wave at high frequency (Ultrasonic Wave) and detects change in density of medium. Based on performance and accuracy Radar is a better solution than Ultrasonic. However for lower range liquid application ultrasonic is a cost effective solution. hope this is useful for you!
Radar or ultrasonic is succesfull in some applications
Ultrasonic sensors are also known as transceivers but are more generally called transducers. Ultrasonic sensors work similar to radar or sonar which generate high frequency sound waves.
Instruments used in taking temperature in a cargo tank include float gauges, radar, ultrasonic or microwave gauges, pressure gauges and tape gauge systems.
They are similar to radar or sonar. They evaluate attributes of a target by interpreting the echoes from radio or sound waves respectively.
This list is a beginning but, in theory, you might use any sort of sensor. Radio receiver. Stress sensor. Optical sensor. Lever switch. Radar. Ultrasonic.
Ultrasonic sound examples include medical imaging, cleaning, and distance measurement. In medical imaging, ultrasonic waves are used to create images of internal organs. In cleaning, ultrasonic waves are used to remove dirt and grime from objects. In distance measurement, ultrasonic waves are used in sensors to determine the distance between objects.
Microwave IS used in RADAR.
Ultrasonic anemometers are now being used in the field.
Ultrasound was discovered by Paul Langevin and his collaborator, Constantin Chilowsky, in France in 1915. They developed the concept of using ultrasonic waves for detecting submarines during World War I.
Usually Doppler radar is used.
This could mean:A radar attached to a balloonA balloon used by a radar for calibration