Product overview
The CUAV C-RTK3 X20P is a positioning component for integration into unmanned systems, robots, agricultural navigation equipment and intelligent driving systems. Its architecture combines an X20 RTK full-band receiver, STM32H5 processor and RM3100 electronic compass in a module measuring 52 × 48.5 × 16.5 mm, including screw holes. The specified 30 g weight excludes the antenna and feeder cable. Its physical connections comprise one UART port, one CAN port, one USB Type-C port and one antenna connection, giving integrators several routes for connecting positioning hardware.
Positioning options span standalone GNSS, DGNSS, PPP-RTK and RTK, with different accuracy and convergence figures for each applicable mode. RTK accuracy is specified as 0.006 m + 1 ppm horizontally and 0.01 m + 1 ppm vertically, with convergence below 7 s. The maximum update rate is 25 Hz. Integration requires a 4.75 ~ 5.3V supply at the specified 200 mA, and operation is rated from -15 to +85 °C. L-band capability is present in the hardware but awaits firmware support; the listed firmware designation is C-RTK 3 M4C.
Specifications
| Specification | Value & conditions |
|---|---|
| Processor | STM32H5; 280MHz; Flash 512KB; RAM 128KB |
| Hardware channels | 672 pcs |
| Maximum update rate | 25 Hz |
| Built-in electronic compass | RM3100 |
| Magnetic measurement range | ±1100 μT (Wide Dynamic Magnetic Field Adaptation) |
| Compass resolution and detection sensitivity | 13 nT@200 Cycle Count; Detection Sensitivity 2.7 nT at 1 HzResolution at 200 Cycle Count; detection sensitivity at 1 Hz. |
| Compass noise | 15 nT@200 Cycle Count; Noise Floor 4 pT /√Hz (1Hz)Noise level at 200 Cycle Count; noise floor at 1Hz. |
| Compass linearity | 0.50% within ±200 μTWithin ±200 μT. |
| Upgrade support | Supported |
| Firmware | C-RTK 3 M4C |
| UART port | 1 × UART (JST GH 1.25 4P) |
| CAN port | 1 × CAN (JST GH 1.25 4P) |
| USB port | 1 × USB (TYPE-C) |
| Antenna port | 1 × ANT (BWMCX-KEF) |
| Operating voltage | 4.75 ~ 5.3V (200 mA)200 mA. |
| Dimensions | 52 × 48.5 × 16.5 mm (Includes screw holes)Includes screw holes. |
| Weight | 30 g (Excludes antenna and feeder cable)Excludes antenna and feeder cable. |
| Operating temperature | -15 ~ +85 °C |
| Constellations and frequency bands | L1/L2/L5/L6/L-band; concurrent GPS, Galileo, BeiDou, GLONASS, QZSS and NavIC reception. L-band requires a future firmware upgrade.L-band hardware support is present; L-band firmware is not yet available. |
| Assisted and enhanced positioning | AssistNow™ Live Orbits: GPS L1C / A, Galileo E1, QZSS L1C / A, BeiDou B1I; SBAS: EGNOS / GAGAN / MSAS / WAAS / BDSBAS; u-blox PointPerfect Correction Service (Flex / Live / Global) |
| Security protection | Built-in CW interference detection and spectrum analysis; Galileo OSNMA navigation message authentication; secure boot, configuration locking and tamper-proof storage; active antenna short-circuit/open-circuit detectionSecure boot executes signed firmware only. |
| Positioning accuracy |
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| Convergence time | PPP-RTK: less than 40 s; RTK: less than 7 sPPP-RTK and RTK positioning modes. |
| Start time |
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| Receiver sensitivity |
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| PPS timepulse |
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| Communication protocols | CAN: DroneCAN/CAN FD; UART: NMEA 4.11/4.10/4.0, UBX, RTCM 3.4, SPARTN 2.0.2Protocols depend on CAN or UART interface. |
| Communication rate | 1 Mbit/s (CAN); 8 Mbit/s (CAN FD)CAN or CAN FD operation. |
| Vibration resistance | MIL-STD-810G (7.7g RMS) |
| Integrated receiver architecture | Built-in X20 RTK full-band receiver, RM3100 industrial-grade electronic compass and STM32H5 processor |
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