TS-073358 — Reliable positioning, navigation, and timing (PNT) in GNSS‑denied or disrupted environments remains a critical challenge for defense, transportation, and autonomous systems. While low Earth orbit (LEO) communications satellites offer powerful signals and rapid geometry changes, they are typicall…

TS-073339 — Positioning, navigation, and timing (PNT) resilience is increasingly critical as GNSS vulnerabilities become more apparent in contested, denied, or degraded environments. Low Earth orbit (LEO) communication satellites offer a promising alternative PNT source, but their utility is limited by poorly…

TS-073212 — Reliable positioning, navigation, and timing (PNT) increasingly depends on access to resilient, high‑integrity signals. Traditional GNSS systems face vulnerabilities, including signal blockage, jamming, spoofing, and limited geometric diversity. Meanwhile, emerging low Earth orbit (LEO) megacons…

TS-073173 — Modern navigation systems increasingly rely on signals of opportunity such as 5G and LEO satellite downlinks, but these signals often lack public reference‑signal specifications, may be dynamic or on‑demand, and can suffer from severe Doppler effects. Conventional receivers cannot reliably acq…

TS-072827 — The Need Current navigation systems, such as GNSS, face limitations in urban canyons, indoor environments, and areas with signal jamming or spoofing. The rapid proliferation of LEO satellite constellations presents an untapped opportunity for resilient, accurate positioning. However, leveraging thes…

TS-069653 — Technology Bundle: T2025-053, T2025-055, T2025-056