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Open Systems PNT Card
About
This Open Systems PNT Card represents a modular, open-architecture approach for delivering assured Positioning, Navigation, and Timing (PNT) within threat-filled environments. It integrates GNSS, inertial sensing, precision timing oscillators, and advanced jamming/spoofing detection while maintaining compatibility with CRPA/AJAS antennas. The design demonstrates how PNT assurance can be achieved using MOSA-aligned, standards-based building blocks rather than proprietary, monolithic solutions.
RPNT Architecture for CMOSS/MOSA Environments
Developed as a reference implementation for CMOSS and broader MOSA principles, this PNT card illustrates how resilient navigation, a master clock, and network time service can be realized within SOSA-aligned hardware profiles. The architecture is adaptable to a variety of CMOSS/OpenVPX chassis and serves as a guide for system developers exploring how assured PNT can be integrated into future modular platforms.
Key Capabilities
ARCHITECTURE LEVEL
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M-Code Ready Secure GPS
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Precision Timing Sources (CSAC, OCXO)
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IMU
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Signals of Opportunity
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FlexFusion Engine
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GNSS Receiver
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BroadShield Threat Detection
Accurate
PNT ASSURANCE
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Multi-constellation GNSS capability
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High-performance internal time base and inertial sensing for holdover during GNSS degradation
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GNSS-derived timing and frequency with NTP/PTP distribution
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Open pathway for integration of future PNT sources within a MOSA framework
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GNSS jamming and spoofing detection
Safran Federal Systems was recognized by PEO IEW&S, PM-PNT for its innovative CMOSS-based PNT solutions and potential impact to the U.S. Army and DoD.
Flexible
MOSA-CENTRIC INTEGRATION
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Software-defined and modular, built around CMOSS, SOSA, and VICTORY standards
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Network-based synchronization, configuration, and system management
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Compatible with external IMUs and additional MOSA-compliant PNT sensor modules
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Designed for straightforward insertion into CMOSS slot profiles
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Low phase-noise oscillators supporting precision timing applications
Powered by the FlexFusion® Sensor Fusion Engine
The Open Systems PNT Card uses the FlexFusion® engine to demonstrate a MOSA-compatible approach to resilient PNT. FlexFusion merges complementary PNT sources to achieve precise, robust performance without requiring large, high-cost IMUs.
By consolidating functions traditionally distributed across multiple LRUs into a standards-based, modular PNT architecture, this card highlights how future platforms can reduce SWaP-C, increase interoperability, and maintain long-term adaptability through incremental technology insertion rather than full-system replacement.