APNT Software
Non-GPS Navigation
General Dynamics’ alternate Position, Navigation and Timing (aPNT) Software provides resilient position, velocity and time (PVT) information when GPS is not available. aPNT Software utilizes two-way/time transfer (TWTT) measurement and other space vehicle sensor/clock inputs to provide PNT solutions. These solutions benefit from Global Navigation Satellite Systems (GNSS) data (if available), but do not rely upon GNSS data to meet requirements.
Mature GNSS-Independent TWTT Solution
Performance: Position < 5 m, Velocity < 0.3 m/s, Timing < 3 ns
Adaptable, Easy-to-Integrate Software Executable
Hardware and Operating System Agnostic
Container-Based Software Configuration Item
Key Features & Benefits
- Provides Position, Velocity, and Timing (PVT) solutions in the event of GPS outage
- Trust engine/integrity audit capability
- Validates GNSS-derived PVT solution using Intra-Satellite Links (ISLs) time transfer and training information
- Configurable via input parameter selection and can operate with a selectable combination of optical communication terminal input data and Ka-Band input data
- Initiated for SDA T0 Transport SVs, Baselined for several SDA T1 Layers & SV Designs
- Mature and Ready for Flight 2022 Already Base lined for Several Small Sat. Contracts
