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Sonograms and sonars both use sound waves for imaging purposes, but they differ in their applications. Sonograms are used in medical imaging to visualize internal body structures, while sonars are used in navigation and detecting objects underwater. Both technologies involve emitting sound waves and analyzing the returning signals, but they are designed for distinct purposes.
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How much does a sonar cost?
The cost of a sonar can vary widely depending on the type and specifications. Basic handheld sonars can start at around $150, while more advanced and professional-grade sonar systems used in research or military applications can cost tens of thousands of dollars. It's best to research specific models and brands to get an accurate price estimate.
What are the differences in the sonars that you use?
When first discussing profilers with the uninitiated, there is sometimes some confusion as to how they differ from an imaging scanning sonar or a sidescan sonar. First of all, let's look at the difference between a scanning sonar and a sidescan sonar. With a scanning sonar, a small transducer emitting thousands of ultra sonic audio pulses per second is rotated about an axis using a small motor to drive it. The transducer rotates around an axis much as a lighthouse lamp rotates. In contrast, a sidescan sonar has a fixed transducer which also emits thousands of pulses per second but its movement is a linear one generated by towing the transducer through the water rather then an angular movement achieved with a motor. Next we must differentiate between an imaging sonar and a profiling sonar. Imaging sonars are typically used to provide an image of the seabed or water column much as a radar does on land. They provide a multicolored ('chromatic') display which shows stronger echo returns as brighter colors than points with weaker echos. E.g. you may get a bright yellow image from a strong return off of the side of a steel shipwreck and dark blue image off of the weak return from a smooth sand bed. A profiling sonar on the other hand provides a digitized version of the echo returns. The sonar's processor looks at the return signal for each pulse and decides where along that pulse's return time lays the strongest return. Rather than providing an analog range of colors for each pulse it provides a single dot or x,y point at the point of strongest return. Another differentiating factor between imaging and profiling sonars is the shape of the transducers beam pattern. An imaging sonar is typically a fan beam whereas the profiler emits a beam pattern like a spot or pencil beam. The imaging sonar fan beam (typically around half power +/-15 deg from horizontal) is configured to ensure that all targets above and below horizontal are detected while retaining an angular resolution (about 1.7 deg). The profiler on the other hand is a very specific tool for performing engineering measurements. Its spot or pencil beam (half power about 1.7deg from both horizontal and angular rotation) means that it is able to provide high resolution measurements both in terms of the horizontal plane and of angular displacement around its motor axis. OK, so what does all this mean to you? When we are inspecting a pipeline, our profiler takes very specific measurements of the internal dimensions of the pipe at that location. Not an average over the fan beam as it would be if we used and imaging sonar. The profiler then provides us with either a series of digitized "dots" in a screen shot (as in figure below) or it can save those thousands of digitized points as an ASCII file which can then be imported into CAD software for post processing. If combined with the recorded penetration depth we now have the necessary x,y,z points required to build a 3D model of the pipe (x & Y from the profiler and z from the umbilical counter). Once input to CAD, such parameters as volume of sedimentation or percentage restriction in pipe can be calculated. If you would like a further, more detailed description of sonar theory, Imagenex provide an excellent summary on their website imagenex.com.
What Types of waves are used in echolocation?
Sound waves are typically used in echolocation. Animals emit high-frequency sound waves that bounce off objects in their environment and return to them as echoes, allowing them to determine the location, size, and shape of objects. Bats, dolphins, and some species of birds are known to use echolocation.
A technological development that was a direct development of World War 2?
SONARs
What is the band name on SpongeBob that sings musical doodle?
It is called "The Sonars"
How do sonars hurt are environment?
They can confuse and hurt whales and dolphins in the ocean.
The reason submarines can detect other underwater objects is largely due to which?
Submarines have sonars.
Are submersibles used to map the ocean floor?
no sonars areNo they are not, a sonar maps the ocean floor.
What are sonars used for?
Scientist use Sonar to map the ocean floor. Scientist use Sonar to map the ocean floor.
What are military sonars doing to dolphins?
It's like a disco dance party. It's like a disco dance party.
What is the sailing technology today?
The technology for sailing is electronic sonars, solar panel boats, radars, and computer guidance, as well as sattelite connected devices.
What exactly is garmin sonar for?
A Garmin Sonar is just a specific brand of sonar. Sonars are used primarily for underwater scanning that can detect objects by emitting pulses or "signal waves", and finding the depth of water. Two great sites for finding more about Garmin Sonars are http://garmin.blogs.com/my_weblog/2008/10/an-in-depth-loo.html and http://www.garmin.com/uk/products/marine-products/.
How did the titanic disaster change sea travel?
More efforts were put in to avoid collisions such as detectors like sonars and radars, more lifeboats, and even emergency escape plans
How did boating rules and regulations change after the titanic sunk?
Emergency practice drills HAVE to be in place and boats now have tracking technology such as radars and sonars to better detect problems ahead
How does science help us with the weather?
They have expensive equipment that helps a bunch: Doppler radars, sonars, satellites. How else are you gonna see if it was raining in China today...other than digging a hole?
