GSG-Anechoic
CRPA & GNSS Testing for Anechoic Chambers
Safran Electronics & Defence’s GSG Anechoic is a complete GNSS testing system designed specifically for anechoic chambers. It combines the Skydel simulation engine, advanced calibration tools, and integrated hardware to deliver a powerful and efficient CRPA testing solution.
Built on commercial off-the-shelf hardware, GSG Anechoic reduces setup complexity while enabling high-performance, repeatable testing for multi-element GNSS antenna systems.
It is designed to accelerate chamber calibration, simplify system architecture, and provide accurate simulation of real-world GNSS environments.
Traditional GNSS testing setups often require multiple hardware systems and lengthy calibration processes. GSG Anechoic simplifies this by integrating simulation, calibration, and RF output into a single, cohesive platform.
This reduces setup time, improves repeatability, and enables engineers to test complex GNSS antenna systems with greater confidence and efficiency.
With automated calibration and high RF output capability, the system ensures precise, reliable testing even under challenging interference conditions.
| Feature / Capability | GSG Anechoic | GSG Wavefront |
|---|---|---|
| Primary Use Case | Full CRPA antenna testing in anechoic chamber | CRPA ACU and unit-level testing outside the chamber |
| Test Environment | Anechoic chamber | Lab / integration environment |
| CRPA Simulation Level | Full antenna and wavefront simulation | ACU simulation and CRPA behavior emulation |
| RF Outputs / Antenna Elements | 32+ phase-coherent RF outputs | 8+ antenna elements |
| Phase Synchronization Accuracy | Time delay calibration < ±0.5 ns | Phase synchronization < 1° RMS |
| Calibration Capabilities | Automatic antenna mapping, delay & power calibration | Not required (ACU-level simulation) |
| Signal Generation | Multi-channel GNSS & interference signal generation | Real-time phase-synchronised generation |
| Jamming Capability | Very high jamming power (>110 dB J/S) | Advanced dynamic jamming transmitters |
| Dynamics Support | Realistic spatial wavefronts in chamber | High-dynamic trajectories (GNSS & non-GNSS) |
| Waveform Flexibility | Skydel-based GNSS & interference scenarios | User-defined waveforms & transmitters |
| Hardware Architecture | COTS-based scalable RF hardware | Compact, high-performance form factor |
| Typical Deployment Phase | Antenna validation & characterization | ACU development & integration testing |
| Complementary Role | Validates full antenna performance | Enables rapid ACU testing without chamber |
GSG Anechoic delivers a complete, high-performance solution for GNSS antenna testing in controlled environments—enabling faster calibration, more accurate results, and improved system validation.