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Although bats, dolphins and some blind folks have used an active sonar (SOund Navigation And Ranging) system for many years (they make little squeaks or clicks and listen for the returning echos) The equivalent mechanical electrical system (ASDIC) was developed in the early years of the 20th century. The system uses both the speed of the returning echo and changes in the frequency of the returning sound to detect location, and direction of the detected object
A passive system (just listening) is used by most animals and birds. Leonardo da vinci proposed a directional listening tube to detect the approach of ships.
In general, only Passive Sonar is primarily used aboard modern submarines due to the noise factor; active pings work both ways for detection much the way tracer bullets do. Passive Sonar can tell you a lot about a target though; bearing (location), type of target (merchant vessel, trawler, warship, submarine, etc.), speed (turncount if it's a surface ship), Angle on the Bow, bearing rate, range (over time after plotting). Active Sonar is only used to verify target range prior to shooting a torpedo.
Passively listening to a target, you can also tell its direction by doppler sound effect, i.e., whether or not it's getting closer or moving away, by volume and frequency pitch. You normally assume that the target is closing on your position; if it wasn't, you wouldn't have detected it.
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What is the system that uses the reflection of underwater sound waves to detect objects?
Sonar (Sound Navigation and Ranging) is the system that uses the reflection of underwater sound waves to detect objects. This technology is commonly used in naval navigation, fishing, and underwater mapping.
The reason submarines can detect other underwater objects is largely due to?
Sonar. Active and passive
What type of wave is sonar?
Sonar uses sound waves to detect objects underwater. It is a type of acoustic wave that travels through the water and reflects off objects, allowing for the measurement and mapping of underwater environments.
How far can sonar detect?
The distance that sonar can detect objects underwater varies depending on factors like the power of the sonar system, water conditions, and the size of the object being detected. In general, sonar can detect objects up to several miles away when using higher power systems in optimal conditions.
What property of a wave is illustrated by sonar?
Sonar illustrates the property of the wave known as reflection. The sonar device sends out sound waves that bounce off underwater objects and return to the receiver, allowing it to map the ocean floor or detect objects underwater.
What does SONAR mean and what is this method use for?
SOund Navigation And Ranging. Its used mainly to detect underwater objects.
What is a device for detecting an underwater object called?
A device for detecting underwater objects is typically called a sonar device. Sonar uses sound waves to detect and locate objects underwater by measuring the time it takes for the sound waves to bounce off the object and return to the device.
What are the differences between radar and sonar in terms of their applications and capabilities?
Radar and sonar are both used for detecting objects, but they operate in different mediums. Radar uses radio waves to detect objects in the air or on the ground, while sonar uses sound waves to detect objects underwater. Radar is better for long-range detection and tracking of objects in the air, while sonar is better for underwater navigation and detecting objects beneath the surface of the water.
How do Airplanes use Sonar waves?
Airplanes do not use sonar waves. Sonar is a technology primarily used underwater to detect objects or measure distances by emitting sound waves. Airplanes generally use radar technology to detect and track objects in the sky.
What is sonar the acronym for?
Sonar is an acronym for "Sound Navigation and Ranging." It is a technology that uses sound waves to detect and locate objects underwater.
How sensitive is sonar?
Sonar is a very sensitive technology that can detect objects underwater from long distances. It can detect even small objects like fish or debris, making it a valuable tool in various applications such as navigation, communication, and military purposes.
What words are the basis of the word sonar?
The word "sonar" is derived from "SOund NAvigation and Ranging." It is a technique that uses sound propagation to navigate, communicate with, or detect objects underwater.
