Submarine Speed and Depth Communications Enabling Technologies and At-Sea GPS Reception Demonstration

Reference#: P02116

The Johns Hopkins Applied Physics Laboratory (JHU/APL) has an ongoing interest in providing two-way submarine communications (at speed and depth) and developing buoyant cable antenna (BCA)-enabling technologies. JHU/APL envisions submarine speed and depth communications capabilities that are compatible with existing submarine systems and subsequently has invested IR&D funds, along with Navy funding, in the development of enabling technologies. A High Frequency Structure Simulator (HFSS) based slot antenna model is being developed to aid design of future antenna elements. Technology development projects have included laboratory testing of a flexible AN/BRA-24 compatible L-Band antenna and electronics housing as well as successfully demonstrated UHF BCA uplinks and GPS (Global Positioning System) reception and accurate position determination during submarine at-sea tests.

JHU/APL has continued to develop these technologies and the effort has progressed to the point that we have actual submarine at-sea test experience in GPS reception while the ship operated at a keel depth of 367-feet and a speed of 3 knots. JHU/APL has also developed Thin-Line UHF antenna elements with sufficient performance to support UFO SATCOM when operated in a high gain array that is compatible with the AN/BRA-24 BCA handling system. We have also developed an HFSS model to support future antenna element design efforts. Available for Exclusive and Non-Exclusive Licensing

Mr. E. Chalfin
Phone: (443) 778-7473