GSG-ANECHOIC
GSG Anechoic: Complete CRPA Testing Solution for Anechoic Chambers
Safran Electronics & Defence’s GSG Anechoic is a fully integrated solution designed to streamline and enhance Controlled Reception Pattern Antenna (CRPA) testing in anechoic chambers. Combining the Skydel simulation engine, advanced calibration tools, and full RF hardware, GSG Anechoic enables faster setup, higher accuracy, and reduced system complexity for GNSS testing laboratories.
Accelerate CRPA Testing and Chamber Calibration
GSG Anechoic is purpose-built to speed up anechoic chamber calibration while minimizing the need for multiple hardware systems. By consolidating simulation, calibration, and RF generation into a single platform, labs can significantly reduce setup time and operational overhead without compromising test fidelity.
Cost-Effective, Scalable RF Architecture
Built on commercial off-the-shelf (COTS) hardware, GSG Anechoic supports 32 or more phase-coherent RF outputs, making it an ideal and cost-effective solution for labs already equipped with an anechoic chamber. The scalable architecture allows engineers to test complex CRPA configurations with confidence while maintaining budget efficiency.
Flexible Solutions for CRPA Antenna Testing
Safran Electronics & Defence offers two complementary solutions to address different CRPA testing needs:
GSG Anechoic
Designed to operate directly within an anechoic chamber, GSG Anechoic enables realistic wavefront simulation and precise antenna characterization under controlled conditions.
GSG Wavefront
GSG Wavefront is designed to stimulate the CRPA Antenna Control Unit (ACU), providing a flexible alternative for system-level testing without requiring chamber operation.
Together, these solutions provide unmatched flexibility across development, integration, and validation phases.
Key Benefits of GSG Anechoic
High-Density RF Output Capability
32+ RF outputs for advanced CRPA and multi-element antenna testing
Automated Calibration for Faster Setup
Automatic antenna mapping
Automatic time delay calibration with accuracy better than ±0.5 ns
Automatic power loss calibration within ±0.5 dB
Robust GNSS Interference Testing
Very high jamming power exceeding 110 dB of J/S, enabling realistic and demanding anti-jamming scenarios
Why Choose GSG Anechoic?
GSG Anechoic delivers a unique combination of speed, accuracy, scalability, and cost efficiency. By leveraging the power of the Skydel simulation engine and automated calibration workflows, it empowers test labs to perform advanced CRPA validation with fewer resources and greater confidence.
GSG Product Family Comparison
| Feature / Capability | GSG Anechoic | GSG Wavefront |
|---|---|---|
| Primary Use Case | Full CRPA antenna testing in an 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 stimulation 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, time delay and power loss calibration | Not required (ACU-level stimulation) |
| Signal Generation | Multi-channel GNSS and interference signal generation | Phase-synchronized real-time signal generation |
| Jamming Capability | Very high jamming power (>110 dB J/S) | Advanced jamming with dynamic transmitters |
| Dynamics Support | Realistic spatial wavefronts in chamber | High-dynamics trajectories (GNSS & non-GNSS) |
| Waveform Flexibility | Skydel-based GNSS and interference scenarios | User-defined waveforms and dynamic transmitters |
| Hardware Architecture | COTS-based scalable RF hardware | Compact, high-performance form factor |
| Typical Deployment Phase | Antenna characterization and validation | ACU development, integration, and regression testing |
| Complementary Role | Validates full antenna performance | Enables rapid ACU testing without chamber access |
How They Work Together
GSG Anechoic and GSG Wavefront are designed to be complementary, not interchangeable:
Use GSG Anechoic to validate full CRPA antenna performance in a controlled anechoic environment
Use GSG Wavefront to accelerate ACU development and system testing without the constraints of a chamber
Together, they form a complete, scalable CRPA testing ecosystem across development, integration, and validation.