The Septentrio mosaic-X5 GNSS receiver module is built for professional UAVs that cannot afford signal loss. With integrated AIM+ anti-jamming technology, centimeter-level RTK accuracy, and multi-constellation support, the mosaic-X5 provides reliable positioning even in challenging RF environments where consumer-grade modules fail.
Why Anti-Jamming Matters for Commercial Drones
GPS jammers, radio frequency interference, and spoofing attacks are no longer theoretical threats. Incidental interference from power lines, cellular towers, and industrial equipment can disrupt GNSS signals. Malicious jammers are increasingly common near sensitive sites, airports, and conflict zones. For commercial drone operators, a signal dropout during a BVLOS inspection or mapping mission can mean equipment loss, data corruption, or safety incidents.
The mosaic-X5 addresses these risks at the hardware level. Septentrio’s AIM+ (Advanced Interference Monitoring and Mitigation) technology detects and filters interference in real time, allowing the receiver to maintain tracking on clean signals while rejecting jamming attempts. This is a fundamental difference from standard GNSS modules that lose lock entirely when interference is present.
Technical Capabilities of the Mosaic-X5
The mosaic-X5 is a 26 x 26 mm module supporting all major GNSS constellations: GPS (L1/L2/L5), GLONASS (G1/G2/G3), Galileo (E1/E5a/E5b/E6), and BeiDou (B1I/B2I/B3I). Key specifications include:
- RTK accuracy: 0.6 cm + 1 ppm horizontal, 1 cm + 1 ppm vertical
- Anti-jamming: AIM+ with pulse blanking and notch filtering
- Anti-spoofing: Signal authentication and consistency checks
- Heading: 0.08° with dual-antenna configuration
- Update rate: Up to 100 Hz for dynamic applications
- Convergence time: Under 20 seconds for RTK fix
- Power consumption: Under 1.5W typical
Comparison: Mosaic-X5 vs Standard GNSS Modules
Standard u-blox ZED-F9P and similar modules offer good performance in clean environments but lack dedicated anti-jamming hardware. When a GPS jammer is present, these modules typically lose position lock entirely. The mosaic-X5 maintains tracking through AIM+ interference cancellation. Additionally, the mosaic-X5 achieves RTK convergence roughly twice as fast (typically 10-20 seconds versus 30-60 seconds), which is critical for time-sensitive mapping operations.
For drone manufacturers evaluating GNSS options, the mosaic-X5 provides a clear upgrade path. Our M56 receiver offers a drop-in F9P upgrade, while the HB21 adds dual-antenna heading and 4G NTRIP streaming for advanced surveying applications.
Real-World Applications
The mosaic-X5’s resilience makes it suitable for:
- Power line inspection: Maintains position lock near high-voltage electromagnetic fields
- Urban mapping: Superior multipath rejection in city canyons
- Defense and security: Anti-spoofing protection for sensitive missions
- Agricultural spraying: Reliable RTK fix near trees, buildings, and uneven terrain
- BVLOS logistics: Continuous tracking for beyond-visual-line-of-sight deliveries
Integration with Flight Controllers
The mosaic-X5 is compatible with all major autopilot systems. It outputs standard NMEA and binary protocols over UART, SPI, and USB interfaces. Septentrio provides integration guides for ArduPilot, PX4, and Pixhawk-based flight controllers. For detailed setup instructions, refer to our integration documentation.
Frequently Asked Questions
How does AIM+ anti-jamming differ from standard GNSS filtering?
Standard GNSS modules rely on basic filtering that is ineffective against modern jammers. AIM+ uses adaptive notch filtering and pulse blanking to detect and cancel interference in real time, maintaining position tracking when standard modules lose lock completely.
Can the mosaic-X5 prevent GPS spoofing attacks?
Yes. The mosaic-X5 includes signal authentication and consistency checking that detects spoofed signals. When a spoofing attempt is identified, the receiver can alert the flight controller and maintain tracking on authentic signals, preventing the drone from being misdirected.
What accuracy does the mosaic-X5 provide without RTK corrections?
Without RTK corrections, the mosaic-X5 provides 1-2 meter accuracy using multi-constellation PVT positioning. With RTK corrections, accuracy improves to sub-centimeter level (0.6 cm + 1 ppm horizontal).
Which uav-gnss.com receivers use the mosaic-X5 module?
Our M56, HB21, and HB6 / HB6 Pro receivers are all powered by the Septentrio mosaic-X5 module, offering different form factors and feature sets for various UAV applications.
