Maintain Operational Capability for Personnel in D3SOE.
Adversaries are increasingly using electronic warfare to jam and spoof the Global Positioning System. This presents a serious challenge for warfighters who need reliable navigation and timing in denied, degraded, or disrupted space operational environments (D3SOE).
The RSR GNSS Transcoder™ v2.0 from VIAVI Solutions is a rugged, real-time solution that converts modern Assured PNT inputs such as M-Code, SAASM, INS, and other signals of opportunity into legacy-compatible GPS RF signals. Based on a patented methodology, the system includes a full-constellation GPS simulator that outputs standard GPS L1 C/A, L1 P-code, and L2 P-code signals.
Key features:
- Generates GPS L1 C/A, L1 & L2 P-code RF signals compatible with legacy receivers
- Update rates up to 100 Hz
- External 1PPS input enables time-transfer accuracy better than 5 nanoseconds
- Automatic detection and configuration of BAE Systems (DAGR, MicroGRAM) and u-blox receivers
- Designed for vehicle, airborne, and portable deployments
- Supports covert or lights-out operation for tactical scenarios
Seamless Legacy Integration
The Transcoder generates a GPS RF signal at configurable power levels that appears to the legacy receiver as a live-sky signal. This allows legacy systems to be upgraded simply by replacing the GPS antenna with the Transcoder, without modifying internal hardware or software.
It accepts NMEA Position, Velocity, and Time (PVT) inputs and processes them within milliseconds. This enables real-time conversion of modern PNT sources such as M-code, SAASM, SBAS, Galileo, GLONASS, and BeiDou into signals compatible with GB-GRAM, MicroGRAM, DAGR, and similar receivers.
Power & Interface Options
Power: 7–36 VDC (vehicle/avionics supply) or 5 V USB
Connectors:
- SMA RF Output
- Locking circular DINs for power and serial I/O (enclosure variants)
- USB port for configuration and monitoring via SimCon, GPSCon, or standard terminal
Options:
- Oscillator variants
- TCXO: No holdover
- MEMS OCXO: ~1.5 µs holdover over 8 hours
- CSAC: ~1 µs holdover over 24 hours
- IP67-rated waterproof enclosure with magnetic and screw mounting
- ICD-GPS-153 interface
- 100 Hz update rate
Support at Every Step
We provide support, services, comprehensive training and the resources you need. It’s all part of what we do to maximize the value of your VIAVI investment.
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