Resilient Positioning and Timing System for GNSS-Denied Environments

The UK Defence Science and Technology Laboratory (Dstl) is seeking information from suppliers about commercially available Positioning, Navigation and Timing (PNT) systems that can operate reliably when Global Navigation Satellite System (GNSS) services are degraded, denied, disrupted or manipulated. The system must provide highly accurate UTC-referenced timing (±30 ns) via 1PPS and 10 MHz outputs, plus static position solutions accurate to 5 metres, while maintaining performance during 12-hour periods without external PNT signals and in the presence of jamming and spoofing. Responses should describe system architecture, timing and positioning accuracy with supporting evidence, holdover performance, resilience mechanisms, UTC traceability, sensor fusion techniques, and operational deployment history. The system must use proven technology (TRL 9 or equivalent), operate globally without dependency on fixed infrastructure or ITAR-controlled components, and include details on oscillator technology, environmental constraints, SWaP (size, weight, power), unit costs, and certifications. Responses must be submitted as Word or PDF documents to SP4Commercial@dstl.gov.uk by 9 December 2026 at 17:00 with the subject line 'RFI Response - Resilient Timing and Positioning System for Operation in Degraded GNSS Environments'.