Alternate PNT with eLoran (APEL) for Military Navigation in GPS Denied Environments Navy SBIR FY2016.1 Sol No.: Navy SBIR FY2016.1 Topic No.: N161-002 Topic Title: Alternate PNT with eLoran (APEL) for Military Navigation in GPS Denied Environments Proposal No.: N161-002-0224 Firm: Mayflower Communications Company, Inc. 11 Oak Park Drive, Suite 200 Bedford, Massachusetts 1730 Contact: Nareshbabu Jarmale Phone: (781) 359-9500 Web Site: http://www.mayflowercom.com Abstract: The objective of this SBIR program is to demonstrate a navigation system that can provide continuous position estimate accurate to better than 100 m (with 10 m goal) in GPS-contested environments by augmenting a military GPS receiver with eLoran signals and other small size, weight and power (SWaP) sensors. With eLoran signals being high-powered and transmitted at low-frequency, they are not disrupted by the type of jammers employed to deny GPS and hence can provide an affordable, and reliable backup to GPS. In the Phase I study, Mayflower will develop the APEL system specifications and architecture through simulation modeling and analysis and evaluate its feasibility in providing the required positioning accuracies to the specified platforms. In the follow-on Phase II program, we will perform a detailed design and implementation of the APEL system prototype and demonstrate its performance in relevant GPS degraded scenarios. We anticipate the APEL navigation system to achieve TRL 6 maturity at the completion of the Phase II program. In the follow-on Phase III program, Mayflower will refine the APEL navigation system implementation for performance, robustness, and reliability, and package all the sensors and antennas to meet the SWaP requirements of smaller military platforms. Benefits: The DoD Anti-Access/Area Denial (A2/AD) threat requires development of alternate PNT solutions that complement GPS in GPS-contested environments. This innovative APEL system concept allows for affordable, robust, alternative form of radiofrequency (RF) based positioning, navigation and timing (PNT), providing a substitute navigation capability in environments where the GPS functionality is degraded or completely denied. The APEL material solution being developed under this Navy SBIR program can also be used in commercial navigation market, such as commercial aviation, urban environments and inside buildings to complement GPS whenever eLORAN signal is available. Return