L-3 to install components of Navy Atlantic underwater warfare range
ORLANDO, Fla. - Officials of the Training Systems Division of the U.S. Naval Air Warfare Center in Orlando, Fla., are asking L-3 Communications MariPro in Goleta, Calif., to install the Ocean Sensor Subsystem (OSS) and the Shore Electronics Subsystem (SES) of the Undersea Warfare Training Range (USWTR) off the coast of Jacksonville, Fla., under terms of a $12.6 million contract modification.
The USWTR will help train ship, submarine, and aircraft crews to track targets on the surface and under water, and enable unmanned underwater vehicles (UUVs), manned submarines, surface ships, and aircraft to work together. The USWTR, which L-3 MariPro is building 50 nautical miles east of Jacksonville, Fla., will be a high-fidelity underwater tracking and communications range for anti-submarine warfare (ASW) and anti-surface warfare (ASuW) training.
By the time the underwater training range comes online in 2019, it will process and display on-range tracking data for ships, submarines, weapons, targets, and unmanned undersea vehicles (UUVs) to help naval surface and submarine forces plan and carry out attacks on submerged targets that simulate enemy submarines.
The contract modification calls for L-3 MariPro to install two components of the USWTR. The wet end, or Ocean Sensor Subsystem, will consist of as many as 300 underwater acoustic devices located throughout the 500-square-mile range. The OSS will have more than 600 nautical miles of node cable; two junction boxes; and shore-based display, processing, and control subsystems. The range's dry end, or the shore electronics subsystem, is located on the shore at Jacksonville, Fla., and interfaces with a digital signal processor (DSP).
Some undersea nodes in the OSS ping active sonar signals through the water where other receiver nodes pick them up. The SES detects and time tags the ping signals, which then go to an underwater tracking subsystem that calculates the positions of underwater targets through triangulation.
The OSS consists of hydrophones and other electronics mounted on the ocean bottom throughout the tracking range area that are integrated with a cable system to bring the signals back to the SES on shore. The OSS will have a projector that acts as an underwater telephone to enable operators to communicate with submarines on the range.
The SES, meanwhile, serves as the shore termination component for the OSS, providing power to the OSS, and interfaces with the OSS by coaxial or optical cable to receive signals from the hydrophones and transmit signals to the projectors.
The USWTR will enable Navy training scenarios ranging from one fixed-wing aircraft or helicopter vs. one submarine; one ship and one helicopter vs. one submarine; one submarine vs. one submarine; and two surface ships and two helicopters vs. one submarine.
Those training on the range will be able to use a variety of practice torpedoes, active and passive sonobuoys, dipping sonar, torpedo sonar, underwater communications, submarine acoustic countermeasures, expendable bathythermographs, and anti-torpedo decoys. Training scenarios can last from two to six hours.
The Navy finished installing ocean cables under the seafloor on the training range last summer. The USWTR ultimately will have a cable termination facility at Mayport Naval Station in Atlantic Beach, Fla., and a range operations center at Jacksonville Naval Air Station in Jacksonville, Fla.
L-3 MariPro initially won a potential $127 million contract in 2012 to design the USWTR. The program's first phase provides the initial infrastructure, including shore facilities and equipment, as well as near-shore cable and sea bed sensors to instrument an area of approximately 200 square nautical miles. The second phase will instrument the remaining 300 square nautical miles.
L-3 MariPro will do the work on this contract in Goleta, Calif.; Newington, N.H.; and Mayport, Fla., and should be finished by May 2019.
FOR MORE INFORMATION visit L-3 MariPro at www.l-3mps.com/maripro.
John Keller | Editor
John Keller is editor-in-chief of Military & Aerospace Electronics magazine, which provides extensive coverage and analysis of enabling electronic and optoelectronic technologies in military, space, and commercial aviation applications. A member of the Military & Aerospace Electronics staff since the magazine's founding in 1989, Mr. Keller took over as chief editor in 1995.
