True!Pretty much but it's not always off the ocean bottom. Sonar sends out a spherical "ping" it then receives pieces of the sphere back at different times based on when it hit something. It knows it's not the source as the pitch of the ping changes upon contact with a solid object. To gauge depth like what you're asking about something called "Directional Sonar" is used. Which focuses the ping in a given direction rather than a broad spectrum.
It is exactly as it says sector scan meaning it transmits sound and waits for it's echoes and translates those echoes e.g. bottom,fish,etc.. Since it is sectoral and not omni, it can give results for a portion of the 360 degree view. different companies offer different beam angles ( 5,10,15...45 degrees). Of course, the bigger the angle, the quicker it can complete a full circle scan.
Scuba Divers use a Sonar to find treasure or a hidden ship.
Many species of sharks do not use sonar, as they have very effective senses, but some species are thought to. The hammerhead shark, in particular, is thought to use sonar waves detection.
Botos use sonar to navigate and hunt. They resemble dolphins.
Sonar uses echoes to locate objects by bouncing sound waves off them and detecting the echoes.
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because sound travels faster in water
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Yes, echoes are important because they can provide information about the surroundings, such as the size and distance of objects. In nature, echoes are used by animals for navigation and communication. In technology, echoes are utilized in echo-location systems like sonar and radar for a variety of applications.
A sonar device can detect objects underwater by emitting sound waves and analyzing the echoes that bounce back. It can be used to find underwater features such as fish, submarines, shipwrecks, or the seafloor.
The opposite of sonar is silence as sonar involves emitting sound waves and listening for echoes while silence denotes the absence of sound.
Sonar is a technology that uses sound waves to detect objects underwater by measuring the time taken for the sound waves to bounce back. An echo is the reflection of sound waves off a surface back to the source. Sonar is a system that uses echoes to create a map of the underwater environment.
Sonar stands for "sound navigation and ranging." It is a technique used for detecting and locating objects underwater by sending out sound waves and analyzing the echoes that bounce back. Sonar is commonly used in navigation, fishing, oceanography, and military applications.
Sonar, which stands for Sound Navigation and Ranging, uses sound waves to detect and locate objects underwater. Sound waves are emitted from a transmitter, and when they hit an object, they bounce back as echoes. By measuring the time it takes for the echoes to return, the distance and location of the object can be determined.
Sonar is the generic name of the technology that is used to locate objects underwater. Sonar systems are of two basic types - active and passive. In active sonar the system let's out a pulse of sound and then the operator listens for echoes. The passive sonar the operator listens to sounds emitted by the object one is trying to locate.