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Everything You Need to Know About USBL and Sonar

November 6, 2022
3 Min Read

It would be easy to see deep underwater and navigate in an ideal world since the waters could be crystal clear even from several miles. However, this is not the case in almost all water catchment areas. Therefore, unclear visibility underwater can sometimes hinder operations and research, especially if you lack the appropriate equipment. Fortunately, technology has made these operations easier and faster through equipment such as USBL, sonar, AUVs, and ROVs. Check below to learn more information about USBL and sonar.

What is Sonar?

Sonar, also referred to as Sound Navigation and Ranging technology, refers to a system used to detect objects underwater. This system utilizes sound waves usually reflected and sent out by those objects. Sonar is typically used to accomplish underwater operations with low visibility, where a diver or camera system would be unable to view clearly without enhancement.

When Can I Use Sonar?

Generally, sonar has been found effective in various operations in different work environments and industries. Sound Navigation and Ranging technology can easily locate objects underwater when conducting deep salvage operations where turbid water may restrict maximum camera visibility. Additionally, this system will help view underwater infrastructure allowing repair and inspection when need be.

Consequently, sonar is significant in underwater discovery as it can help scientists monitor aquatic life and its surroundings or help locate sunken ships in murky water. Likewise, sonar is beneficial in legal matters as it can help police and rescue teams locate victims and relevant evidence underwater.

The Sound Navigation and Ranging technology systems can be availed in various options, which include:

Higher frequency sonar. This system provides a shorter range but with a higher and sharper resolution.

Lower frequency sonar. This system provides a longer range but with low resolution.

Smaller windows. This involves a system consisting of more data and reflections, thus, better image quality.

Higher number of beams. This system comprises an increased number of beams, which will improve the image quality.

What is a USBL System?

Also referred to as an ultra-short baseline, a USBL system involves a method utilized when positioning underwater acoustic. This system tracks subsea devices like AUVs, divers, or ROVs. Generally, USBL positioning can be utilized in deep or shallow waters where its accuracy is proportional to the distance.

Defining USBL Positioning

USBL is among the options you can consider when integrating sonar. To guarantee the efficiency of your sonar system, you must select a reliable USBL system. You can check out subsonus USBL, which offers high velocity, positioning, and accuracy for depths of up to 1000 meters. The USBL system utilizes triangulation to depict the position of objects like an ROV. The system will consist of a transducer on its surface and a transponder usually placed on the device’s surface it works with or the diver.

An acoustic wave is usually transmitted by the transducer and received by the subsea transponder. The USBL system measures the time between the transmission of the first acoustic wave and the reply converting it into a range.

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