C-RTK 3 G5 Anti-Jamming & Spoofing GNSS Module
- 0.6 cm + 0.5 ppm RTK Positioning Accuracy.
- Dual-Antenna Orientation, No Compass Calibration Required.
- Multi‑Constellation Multi-Band GNSS Reception System.
- STM32H5 High-Performance Processor.
- CAN FD + 20 Hz High Update Rate.
- Interference Detection and Alerting.
- All-Round Anti-Jamming & Anti-Spoofing.
- Integrated LOCK+ for Stable Tracking Under High Vibration and Shock.
- 2-Channel EVENT Inputs with Configurable PPS output.
- Compatible with ArduPilot & PX4.
High-Precision Positioning | Centimeter-Level Positioning + Dual-Antenna Direction Finding
It features centimeter-level RTK positioning accuracy, with a horizontal accuracy of up to 0.6 cm + 0.5 ppm and vertical accuracy of up to 1 cm + 1 ppm, and an initialization time of only 7 seconds. It is compatible with multiple positioning modes such as Standalone and DGNSS, with a velocity accuracy of up to 3 cm/s. Users can switch modes according to the environment and tasks, satisfying the high-precision positioning and attitude perception needs of unmanned systems in complex and dynamic environments.
DGNSS Accuracy：0.7 m
Standalone Accuracy：1.9 m
RTK Accuracy：1 cm+1 ppm
DGNSS Accuracy：0.4 m
Standalone Accuracy：1.2 m
RTK Accuracy：0.6 cm+0.5 ppm
Vertical Accuracy:
Horizontal Accuracy:
Multi-band Multi-Constellation Reception | Full Coverage in Complex Environments
Built with 789 hardware channels, it simultaneously receives full-band signals from GPS, GLONASS, BeiDou, Galileo, QZSS. This significantly enhances signal acquisition capability and ensures reliable positioning even in signal-challenged environments such as urban canyons and tree-shaded areas. It is compatible with Galileo HAS high-precision services, and its look-ahead function can be continuously upgraded via firmware updates to maintain technological advancement.
BeiDou
QZSS
GPS
Galileo
GLONASS
Execution
Performance
Wait
Zero
1023
CoreMark
Computing
MHz
250
STM32H5 Processor | High-Performance Core
Powered by the STM32H5 high-performance processor featuring 250 MHz main frequency and Arm Cortex-M33 core, it delivers up to 1023 CoreMark of computing performance, providing ample computational support for complex algorithms.
Ture High Refresh Rate | CAN FD + High Update Rate
Industry-first integration of CAN FD bus into GNSS positioning module. Compared to traditional CAN, the data rate is increased from 1 Mbps to 8 Mbps. Optimized ArduPilot / PX4 firmware support ensures that the 20 Hz refresh rate is not limited to GNSS module performance but truly serves high-precision navigation, significantly enhancing navigation accuracy.
Comparison :
Comparison :
5 Hz
1 Mbps
C-RTK 3 G5：
CAN：
CAN FD：
Speed
Others :
20 Hz
8 Mbps
Refresh Rate
Time (s)
Comparison Table of Data Rates: Traditional CAN vs. CAN FD Buses
Traditional CAN
CAN FD
Data Segment Rate (Mbps)
Precise Identification | Interference Detection Display Alert
Equipped with dedicated GNSS RF interference detection technology, it accurately identifies the operating frequency band and signal strength of interfering signals. interference information is pushed in real-time to the smart controller via DroneCAN / UART interfaces and clearly displayed on the ground station, helping users immediately understand the RF interference environment, effectively avoid risks, and ensure operational safety.
All-Round Protection Ⅰ | Powerful Anti-Spoofing
Leveraging AIM+ detection technology, satellite reliability is graded, marked, and filtered based on factors such as abnormal spoofing signal characteristic, space-time and space-frequency verification, multi-constellation cross-validation, and inertia coupling. In addition, OSNMA satellite security authentication mechanism is introduced to provide comprehensive protection against artificial signal spoofing.
Signal Injection
Message
Frequency Verification
Multi-Band / Multi-
Inertia Tight Coupling
Graded, Marked, and Filtered
AIM + Space-Time / Space-
Constellation Cross-Validation
OSNMA Satellite-Level Security Authorization Mechanism
Blocks Forged
Encrypted Navigation
Filter-Based Active Mitigation
RAIM+ : Autonomous integrity monitoring, prevents faulty positioning.
IONO+ : lonospheric scintillation detection technology, protects against ionospheric disturbance.
APME+ : Multipath anti-jamming technology, reduces errors caused by building-reflected signals.
Automated Monitoring and
AIM+ : Monitors and filters to eliminate electromagnetic interference and signal suppression.
Output Clean Positioning Data
All-Round Protection Ⅱ | Robust Anti-Jamming
Integrates four auxiliary protection technologies —— AIM+、 APME+、 IONO+、 RAIM+ —— to systematically address issues such as multipath interference, ionospheric disturbance, data anomaly and signal suppression, which significantly enhances the positioning stability and reliability of the system under dynamic and complex environments.
Integrated LOCK+ | Resilience Against High-Frequency Vibration and Shock
Specifically optimized for severe vibration and shock scenarios, LOCK+ enables continuous and stable tracking of satellite signals. It significantly reduces the risk of positioning latency in dynamic environments, ensuring continuous and uninterrupted positioning in complex conditions such as high-frequency vibration and rapid
movement.
Actual value
Antenna Height [m]
Integrated LOCK+ technology：
LOCK+ : Copes with severe vibration and shock, maintains stable satellite signal tracking, and prevents signal loss.
Time [s]
Measured value
Fully Traceable Data | Support Local Data Logging
Equipped with TF card local storage, it records comprehensive data including GNSS raw data, positioning results, attitude data and interference logs. This ensures high data security and fast read speeds, facilitating raw data review, analysis and performance optimization.
Extensive Ecosystem Compatibility | DroneCAN Communication Protocol
Equipped with 1 CAN, 1 UART, USB 2.0 HS interfaces, it features high-extension and rich interfaces. Adopting DroneCAN protocol, it is fully compatible with ArduPilot & PX4 mainstream open-source platforms. Paired with CUAV open-source controllers, it is suitable for autonomous unmanned systems requiring high-precision positioning and high reliability, including unmanned surface vessels, robots, multi-rotors, VTOL fixed-wing aircraft and helicopters.
C-RTK 3 G5 Dimensions chart
C-RTK 3 G5 Pinouts
ArduPilot, Dronecode, and PX4 Long-Term Partners
CUAV Technology Co., Ltd. is a National High-Tech Enterprise and Guangdong Provincial Specialized, Sophisticated, Innovative SME that focuses on open-source unmanned system innovation technologies. It integrates R&D, production, sales, after-sales service, and technical support into a cohesive operation. The company maintains long-term collaborative partnerships with leading open-source organizations such as ArduPilot, Dronecode, and PX4.
Supports ArduPilot and PX4 firmware
Procurement/Purchasing Communication
Technical support
Feedback
Event contact
