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One use of sonar is locating an item underwater. (There are many other uses). An emitter sends out a single sharp sound. The time until the sound is picked up by a network of microphones is measured. The first microphone to pick up the echo is the closest to the item. Dividing the time by the speed of sound in that depth and temperature of water, then dividing by two, gives the distance to the target item. The direction is given by mathematical analysis of the returning sound by the three closest microphones. Finally, movement of the object is analyzed in two ways ... first, if the frequency of the returning sound is the same as that originally sent out, the object is stationary. If the frequency is lower, the item is moving away and if higher, the item is moving closer to the emitter. Second, a second "ping" is issued from the emitter. The time to the first return of the sound is compared to the first "ping". This allows a comparison of distances.
Bats have been shown to use a very similar system (in air) to locate mice.
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Why is sonar an acronym?
Sonar is an acronym for "Sound Navigation and Ranging." It is used to describe a technique that uses sound propagation to navigate, communicate with, or detect objects underwater. The term was created to provide a concise and descriptive name for this technology.
Describe three technological advances during World War 2?
RADAR, SONAR, the proximity fuse,
What is the differences of an active sonar and passive sonar?
Active sonar sends a signal out from a source and when it encounters an object the signal reflects back to the source. This can be detected by the object it is reflecting off of like a ship or submarine. Passive sonar is simply putting a microphone in the water and listening. It is also undectable.
What are Lists of objects types of people and situations called?
These types of lists are commonly called "personas" or "scenarios." Personas represent a fictional character that embodies the characteristics of a specific user group, while scenarios describe a specific situation in which a user interacts with a product or service.
What is the wavelength of sonar?
The wavelength of sonar waves can vary depending on the frequency of the sound waves being emitted. In general, the wavelength of sonar used in underwater applications ranges from a few centimeters to several meters. The selection of the frequency and corresponding wavelength is based on the specific requirements of the sonar system and the properties of the underwater environment being explored.
Which method of studying the ocean floor gives some degree of proximity but is efficient in terms of time as well?
sonar sonar sonar sonar SONAR
Which method of studying the ocean floors gives some degree of proximity but is efficient in terms of time as well?
sonar sonar sonar sonar SONAR
Which is more expensive a boat with sonar or a satellite with sonar?
sattelite with sonar
What do bats have sonar or radar?
Sonar
Do bats have sonar or radar?
Sonar
What is the full word for sonar?
sonar
Does the Arctic fox use sonar?
No, the Arctic fox does not use sonar. It is not equipped with sonar.
