This is a market research notice for a technology study and trade space analysis on a proposed optical tracking system (T-SPOT) to provide precise positioning data for test ranges in GPS-denied environments. The primary objective is to develop a system architecture and analysis through modeling and simulation, not to deliver a fieldable system. The anticipated contract vehicle is the TReX-II consortium, and respondents must verify their eligibility for it. Capability statements are due by 4:00 p.m. EST on February 20, 2026. No budget information or specific performance location is provided.