What are the uses of side scan sonar?
Side-scan sonar is a category of sonar system that is used to efficiently create an image of large areas of the seafloor. This tool is used for mapping the seabed for a wide variety of purposes, including creation of nautical charts and detection and identification of underwater objects and bathymetric features.
When was side scan sonar introduced?
Murky Beginnings of Side Scan Sonar In 1954 Hagemann, while employed by the USNMDL, filed for a patent for the first American side scan sonar system. His patent was not made public until 1980. Hagemann’s side scan sonar was developed by the USNMDL and later manufactured in the early 1960s by Westinghouse.
When was side scan sonar?
In 1954 Hagemann, while employed by the USNMDL, filed for a patent for the first American side scan sonar system. His patent was not made public until 1980. Hagemann’s side scan sonar was developed by the USNMDL and later manufactured in the early 1960s by Westinghouse.
Who invented Side Scan Sonar?
What is the importance of sonar?
Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.
Who invented the side scan sonar?
What is side-scan sonar imagery used for?
Side-scan sonar imagery is also a commonly used tool to detect debris items and other obstructions on the seafloor that may be hazardous to shipping or to seafloor installations by the oil and gas industry. In addition, the status of pipelines and cables on the seafloor can be investigated using side-scan sonar.
What is the difference between side scan and higher frequency sonar?
Higher-frequency pulses (500 kHz to 1 megahertz) record smaller areas but in much greater detail. The resulting “picture” from side scan sonar data is made up of dark and light areas. Hard objects protruding from the bottom send a strong echo and create a dark image.
How do side side scan sonars view the seafloor?
Side scan sonars are designed to view the seafloor from the side, and provide very poor geometry directly under the towfish (Figure 2). In both Figure 1 and 2 the track of the towfish is shown by the large pixels.
Who invented side scan sonar in 1950?
Experimental side-scan sonar systems were made during the 1950s in laboratories including Scripps Institution of Oceanography and Hudson Laboratories and by Dr. Harold Edgerton at MIT. Military side-scan sonars were made in the 1950s by Westinghouse.