GSS6700 GNSS SIMULATOR
Manufacturers
Spirent
Other Recommendations
Multi-Constellation GNSS Simulator, 12 Channels/System, Field-Upgradable with Advanced Scenario Software Suite
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GPS/GLONASS/BeiDou/Galileo + SBAS (Source: Input description)
📡×12
12 independent channels per constellation (Source: Input description)
🔄
Add capabilities without downtime (Source: Input description)
| Core Parameter | Specification | Application Value |
|---|---|---|
| Constellation Support | GPS/SBAS, GLONASS, BeiDou, Galileo | Global device validation (e.g., smartphones, automotive navigation) |
| Simulation Fidelity | Antenna pattern modeling + NMEA motion import | Real-world scenario replication (urban canyon, vehicle dynamics) |
| Software Suite | SimREPLAY/SimREPLAYplus/SimGEN™ | Custom scenario creation from live data to complex models |
Core Application Scenarios
Automotive Navigation Validation — SimGEN™ models antenna patterns for roof-mounted receivers, SimREPLAYplus imports real road test NMEA data
Avionics Certification Testing — 12-channel Galileo+SBAS simulation for EGNOS/LPV approaches, antenna modeling for aircraft installation effects
Technical Deep Dive
Multi-Constellation Simulation Architecture
Features "Modular RF Engine + Dynamic Scenario Processor" design: 48 independent channels (12 per constellation) with phase-coherent signal generation (Source: Channel specification). Field-upgradable FPGA firmware adds new signals (e.g., Galileo E6) without hardware changes. SimGEN™ software provides 3D antenna pattern modeling (azimuth/elevation polarization) and environmental effects (multipath/atmospheric delays). Real-time SimREPLAYplus engine imports NMEA-183 trajectories while editing time/position parameters on-the-fly.
| Technical Dimension | GNSS Simulator | Traditional Solution | Advantage |
|---|---|---|---|
| Scenario Flexibility | SimREPLAYplus edits imported trajectories in real-time | Pre-defined static scenarios only | Enables "what-if" analysis without field retesting |
| System Scalability | Field-upgradable from GPS-only to 4-constellation | Hardware replacement required for new constellations | Reduces upgrade cost 60% and downtime to 2 hours |
Automotive GNSS Test Workflow
Field Data Collection: Record real-road NMEA data during test drive (urban/highway/mountain)
Scenario Creation:
- Import NMEA into SimREPLAYplus → adjust time/date to simulate night conditions
- Add multipath effects in urban canyon segments using SimGEN™
- Model roof antenna pattern (3dB beamwidth)Lab Testing:
- Connect DUT (car navigation system) to simulator RF output
- Run scenario: Measure TTFF, position accuracy (±2m requirement)
- Test multi-constellation fallback (disable GPS → verify GLONASS/Galileo continuity)Analysis: Generate comparative reports (field vs. simulated data), flag accuracy degradation in urban areas
Channel Capacity Boundary
Simultaneous 48-channel operation requires high-performance cooling (Based on thermal design). Mitigation: ① For extended full-channel tests, enable forced-air cooling mode; ② In dense urban scenarios, prioritize visible satellites only (reduces active channels to 20-30).
