PROTONEX LLC

Protonex LLC specializes in the design and development of advanced magnetic sensing and navigation systems for defense applications, with a focus on extreme miniaturization, power efficiency, and resilience in GPS-denied environments. The company delivers cutting-edge vector magnetometers and integrated inertial-GPS solutions that enable precise attitude determination for low Earth orbit satellites, hardened navigation for manned and unmanned aircraft, and mission-critical location tracking in contested electromagnetic spectra. Their technical expertise spans low-SWaP-C sensor architecture, tightly coupled inertial navigation systems, field-deployable beacon technologies, and electromagnetic environment hardening, with a clear emphasis on overcoming adversary obfuscation and signal degradation. Protonex differentiates itself through rapid prototyping of space- and airborne-grade magnetic sensors that operate reliably under high-vibration, high-radiation, and jammed conditions, directly addressing DoD’s need for resilient positioning, navigation, and timing (PNT) alternatives. The company maintains a consistent and focused relationship with the Department of Defense, delivering research and development solutions across multiple branches through SBIR and direct R&D contracts. Their work supports air, space, and tactical domains, with an emphasis on enhancing operational autonomy and survivability in degraded environments where traditional GNSS is unavailable or compromised. Protonex operates primarily within the 541715 NAICS category, focusing on physical and engineering research that bridges fundamental sensor physics with mission-critical defense systems. Their vertical specialization lies in electromagnetic sensing for aerospace and defense platforms, positioning them as a niche innovator in non-GNSS PNT technologies for high-threat operational scenarios. As a small business structured under 2K, Protonex LLC is headquartered in Santa Rosa, California, and operates without federal certifications such as 8(a), HUBZone, or SDVOSB. Despite this, their technical precision and mission alignment with DoD priorities have established them as a trusted developer of next-generation navigation systems for national security applications.