LFCL-UHJ-W

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LFCL-UHJ-W, also known as Low Frequency Coherent Light Underwater Holography System, is a technology used in the field of underwater ship inspection and position determination. It is a type of laser tomography that involves the use of low-frequency coherent light to measure the shape of a ship that is underwater. The system works by illuminating a set of laser beams onto a specific area of the ship, which results in an image being formed that can be used to determine the ship\'s exact dimensions and position.

In this system, the laser light source used is a low frequency light, which means that this type of light can penetrate water, unlike a conventional laser light source which is unable to penetrate water. The laser beam is then directed at a surface reflector and then travels back up to the laser light source. This causes an interference pattern that is used to measure the shape of an object.

The system is also able to measure the speed of a ship, as the laser beams can measure the change in the interference pattern when the speed of a ship changes. This is done by measuring the time it takes for the laser beam to travel back from the surface reflector and then back to the laser light source. The faster the ship is moving, the faster the time of travel will be, which will then result in a faster time of the interference pattern.

The system also has an advantage of providing a clear image even in poor visibility, as it can still detect surface reflectors located on the hull of the ship. This is because the underwater holography system is able to project an image onto a surface of a ship that is up to a specified depth below the water. This depth is dependent on the wavelength of the light beam used.

LFCL-UHJ-W is becoming increasingly popular in underwater ship inspection and position determination, as it can provide accurate measurements and detailed images even in poor visibility. It is also becoming more popular in recreational activities such as scuba diving and sea kayaking, as this system can provide users with an excellent way to explore underwater and identify hazards or objects before entering the water.

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