GSG Wavefront
SOFTWARE-DEFINED CRPA TEST SYSTEM
Protecting your GNSSGlobal navigation satellite system (GNSS): A general term describing any satellite constellation that provides positioning, navigation, and timing (PNT) services on a global or regional basis. See also systems from jamming and spoofing is more critical now than ever. This type of resilience is accomplished with an advanced GNSS Simulator capable of generating dedicated RF signals to test CRPA (Controlled Reception Pattern Antenna) architecture.
Safran’s GSG-Wavefront Shared LO design (Shared Local Oscillator) is a field-proven “off-the-shelf” customizable and easy-to-use CRPA receiver testing platform. It provides an affordable and upgradable solution that leverages Skydel, its robust GNSS simulation engine built on a software-defined architecture.
CRPA are based on multi-element antennas designed to reduce the effects of RF interference, or establish signals’ angle of arrival. GSGA GNSS Signal Generator is a device that is able to create simulated satellite signals and generate real RF signals by first producing I/Q data and calculating the orbits of satellites at a user-defined time, location and trajectory. Wavefront simulators emulate and generate the GNSS and interference signals as outputs of the antennas elements. The GSG Wavefront approach is different from classical anechoic CRPA Tester systems : it simulates the multi-elements antenna by providing as many RF outputs as antenna elements, to test the CRPA unit.
ADVANTAGES
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Advanced Interference Generation Module
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Scalable Architecture
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Signal “Store and Analyze”
CASE STUDIES
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FEATURES
- Scalable antenna configuration, supporting 2 to 16 multi-frequency antenna elements
- Modular all along the lifecycle
- Capable of supporting up to 4 GNSS bands simultaneously
- All GNSS bands : L1, L2, L5, E6, S band
- One GNSS output and one Interference output per antenna element. Combinable to have one RF output per antenna element
- Interference: Jamming, spoofing, and meaconing.
- Simulate multiple threats simultaneously
- Dynamic transmitters with user-defined waveforms
- Shared LO across all Software Defined Radios
- Continuous phase synchronization and alignment monitoring
- Real-time semi-automated calibration tool
- No specific calibration needed after power cycle
- Reduced form factor (24U rack for typical 8 elements system)
- Internal generation and distribution of low phase noise 10 MHz clock and 1-PPS signals
- (option) Rubidium low phase noise clock
- More information (Securesync 2400)
- Possibility to use an external clock, distribute the clock and PPS outside of the system and calibrate clock
- Hardware in the loop
- Quiet operation during simulation
- Powered by Skydel (with GUI & API)
SPECS
- Typical phase alignment bias: < ±1⁰
- Typical phase alignment deviation: 0.5° (1σ)
- Power accuracy on each element: ±0.5 dB
- Power alignment between elements: ±0,5 dB
- Simulation from cold start time: <90 seconds
- Up to 800 signals / element
- Iteration rate: 1kHz
- Dynamics:
- Maximum velocity: 1500 km/s
- Acceleration: no limits
- Jerk: no limits
- Jamming to GNSS Signal ratio: up to +130dB
- HIL latency under 10 ms
- GNSS constellations and Signals:
- GPSGlobal Positioning System is a navigation satellite system. See also open services: L1-C/A, L1C, L1-P, L2-P, L2C, L5;
- GPS restricted signals: M and Y code
- GLONASS: G1, G2;
- Galileo open services: E1, E5a, E5b, E5AltBOC, E6 HAS,
- Galileo restricted signals: PRS
- BeiDou: B1, B2, B1C, B2A;
- QZSSQZSS is a regional satellite system in the Asia/Pacific Region. Developed and maintained by the Japanese government, this satellite constellation provides similar services as GPS: location, navigation and timing.: L1-C/A, L2C, L5
- NavIC: L1, L5, S-band
- SBAS L1 and L5: WAAS, EGNOS, MSAS, GAGAN, SDCM
- Custom Signals
- IQ reader
- Signal purity
- Spurious: <65 dBc
- Harmonics: <80 dBc
- Phase noise: <0.002 rad (RMS)