Does sonar = ultrasonic?

Question

What is the difference between sonar and ultrasonic waves? What's the frequency range of each of them?

Answer 1

Ultrasonic means too high-pitced for the human ear to hear. A silent dog whistle is an example. Sonar refers to using sound to produce an echo to locate something such as a submarine. Bats combine ultrasonics and sonar to locate insects on the wing. They eat the insects.

Answer 2

Ultrasonic and sonar are not interchangeable.

Sonar stands for SOnic Navigation And Ranging, an is the process of using sonic waves for detection and ranging of other underwater bodies, including hard objects, other vessels and fish.

There are two types of SONAR; active and Passive. Active sonar works by emitting a sound wave from a transduer, and monitoring the reflections of other objects, much like RADAR. Passive is the monitoring of other sounds without making any souds.

SONAR works on a multitude of frequencies; any frequency that is capable of being transmitted thought the medium of water. Because water is such a good conductor of acoustic waves, any frequency from low frequencies to ultrasonic may be used. The specific makeup of a signal is part of what helps identify various objects.

The term Sonar can also be used to describe acoustic navigation in air. In this case, air is much better at transmitting accurately ultrasonic waves, so these are the frequencies used in this type of Sonar. Bats are a good example in this case.

In the end, it depends on the type of Sonar you are talking about. Underwater uses a wide range of frequencies. In the air, Sonar is limited to ultrasonic.

Subsonic is frequencies below 20 Hz.
Sonic is frequencies from 20 Hz to 20,000 Hz.
ultrasonic is above 20,000 Hz.

Answer 3

Sonar does indeed refer to use of sound to gauge distance. The counds used can be supersonic, but does not need to be. In technological uses of sonar (rather than biological ones) it generally is.

Subsonic, like supersonic, refers to speed not frequency. Subsonic means below the speed of sound.

The correct term for sound below the frequency audible to man is infrasonic.

Answer 4

Sonar is the name for a navigation and detection technique which uses ultrasound.

Sonar and Ultrasound are not the same thing, sonar USES ultrasound.

Answer 5

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Answer 6

sonar in fact does equal ultrasonic.

the frequency range of ultrasonic is anything above 44.1khz
sonar operates on waves between 44.8khz and 192khz, (respectfully), with subsonic operating at anything below 44.1khz

hope this helps you!!

Answer 7

Sounds like an interested question

Answer 8

thank you for the answers, much appreciated.