The Department of Defense, specifically the Navy, is seeking proposals for the Small Business Innovation Research (SBIR) project titled "Low Size, Weight, and Power (SWaP) Phased Array For Vehicle Tracking Using Signals of Opportunity." The objective is to develop a state-of-the-art passive phased array system that enhances the positional accuracy of hypersonic vehicles by utilizing signals of opportunity for real-time tracking and corrections to inertial measurement unit drift errors. This technology is critical for advancing military capabilities in high-speed weapons and space systems, with potential dual-use applications in commercial sectors such as navigation and tracking systems. Interested parties should note that the solicitation is set to open on April 23, 2025, with proposals due by May 21, 2025, and further details can be found at the official SBIR website.