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27 Association of the United States Navy Bigger ships and aircra are not limited by the same space, weight and power constraints — or SWaP — as smaller platforms and can carry the larger Advanced Digital Antenna Production (ADAP) seven-channel GPS anti-jam system currently in fleet-wide use. But there are platforms that need a smaller antenna system. Even the submarine community was interested. So Mayflower leveraged SAS to create the Submarine Anti-Jam GPS Enhancement (SAGE), small enough to fit on the periscope mast. "SAS was already small, but we had to reduce the SWaP requirement by 50 percent, with the same performance," said Mayflower Director Government Programs Joe omas. SAGE demonstrated that the SAS capability could be made smaller, and caught the eye of Bill Joo, an engi- neer at SPAWAR in San Diego. He thought he could leverage that technology through the Navy's Rapid Innovation Fund to meet the needs of a variety of small vessels, aircra (such as drones) and ground vehicles. "We found that there could be a common set of performance requirements that would be similar across large families of systems, such as small boats, ground vehicles and Military Seali Command ships that don't have robust systems on board, even individual Soldiers and Marines on the ground," Kurdian said. "Bill wanted us take SAGE and improve its perfor- mance level and, if possible, make it even smaller," omas said. "So we developed two separate prod- ucts — the Multi-Platform Anti-Jam GPS Navigation Antenna (MAGNA) Federated System (MAGNA-F), which consists of two separate pieces, an antenna and the antenna electronics, as well as the MAGNA Inte- grated System (MAGNA-I), with all of the associated GPS anti-jam electronics located on the inside of the antenna," out of one Rapid Innovation Fund project. "MAGNA offers the counter-countermeasure that restores the advantages afforded by reliable GPS sources," Joo said. MAGNA works even when a satellite signal is being interrupted by the spinning rotor blades. e system detects a jamming signal and nulls out the jamming, allowing clean GPS signals to get to the receiver. "It works in much the same way as noise-cancelling head- phones," he said. Taking the Next Step SBIR is designed to help small companies mature their technology and develop a plan to successfully transition that technology with a viable business plan. Technology readiness levels (TRLs) are used to indicate the matu- rity of a technology, ranging from TRL 1, which is observing and reporting about basic principles, to TRL 9, where a system has proven itself in mission opera- tions. In the case of MAGNA, what started as a science and technology project became an SBIR-funded effort, with Rapid Innovation Fund funding taking the technology all the way to TRL 8, which is defined as "SAS was already small, but we had to reduce the SWaP requirement by 50 percent, with the same performance." Joe Thomas An MQ-8B Fire Scout unmanned aerial vehicle takes off from the flight deck of the littoral combat ship USS Coronado during operations in the Philippine Sea Aug. 22, 2017. The MAGNA Integrated System, with its associated GPS anti-jam electronics located on the inside of the antenna, will be integrated into the Navy's Fire Scout unmanned system.

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