The Department of Defense (DOD) is seeking proposals for the Small Business Innovation Research (SBIR) Phase I program. The specific topic of the solicitation is "Over-the-Horizon Radar (OTHR) Waveform Design for Maneuvering Targets". The research topic falls under the Missile Defense Agency branch. The objective of the research is to develop a methodology or algorithm for creating an ensemble of waveforms for OTHR applications against fast and maneuvering targets in endo environments. The waveforms should provide thumbtack range/Doppler resolution, resilient range/Doppler sidelobe suppression, and enable spectrum tailoring. The waveforms must also be resilient to ionospheric propagation effects and have inherent electronic protection features. The Phase I project duration is not specified, but it is expected to be followed by Phase II and Phase III. The Phase II project will focus on demonstrating the resilience of Range/Doppler sidelobe suppression to ionospheric propagation effects and comparing the performance of different waveforms. The Phase III project will involve integrating the waveforms in an OTHR transmitter testbed. The funding specifics are not provided in the document. Interested parties can find more information and submit proposals on the Defense SBIR/STTR Opportunities website.