Description
The HB52 / HB52H is an ultralight full-frequency RTK GNSS receiver board built on the Septentrio mosaic-G5 platform. At just 43.8 × 34.0 × 11.5 mm with an integrated TCXO, LNA, and 32 GB TF card slot, it delivers 0.6 cm RTK accuracy with <10 ms latency. The HB52H adds simultaneous heading, pitch, and roll from dual GNSS antennas — making it one of the most compact full 3D-attitude GNSS modules for UAVs, AGVs, and autonomous platforms.
Key Features
- Septentrio mosaic-G5 — 789 hardware channels, full multi-constellation multi-frequency tracking
- 0.6 cm + 0.5 ppm RTK horizontal accuracy; 7 s initialization; <10 ms latency
- HB52H: simultaneous heading + pitch + roll — 0.03° heading / 0.05° pitch/roll at 5 m baseline
- AIM+ active interference & spoofing mitigation · APME+ multipath suppression
- LOCK+ vibration-resistant tracking · IONO+ ionospheric protection · RAIM+ integrity monitoring
- Ultra-compact: 43.8 × 34.0 × 11.5 mm — among the smallest full-performance RTK GNSS boards available
- 2× UART + I2C + PPS + SD SPI interface
- NMEA 0183 / SBF / RINEX output · RTCM v3.x (MSM) / CMR / CMR+ correction input
Key Specifications
| Item | Value |
|---|
| GNSS Engine | Septentrio mosaic-G5 |
| Tracking Channels | 789 hardware channels |
| RTK Accuracy (H) | 0.6 cm + 0.5 ppm (RMS) |
| RTK Accuracy (V) | 1.0 cm + 1 ppm (RMS) |
| Heading (HB52H) @ 5 m / 1 m | 0.03° / 0.15° |
| Pitch/Roll (HB52H) @ 5 m / 1 m | 0.05° / 0.25° |
| Update Rate | 20 Hz |
| Dimensions | 43.8 × 34.0 × 11.5 mm |
GNSS Performance
| Signal System | Frequencies |
|---|
| GPS | L1C/A · L1C · L2C · L2P(Y) · L5 |
| BeiDou | B1I · B1C · B2a · B2I · B2b · B3I |
| GLONASS | L1CA · L2CA · L2P · L3 CDMA |
| Galileo | E1 · E5a · E5b · E6 · OSNMA |
| QZSS | L1C/A · L1C/B · L2C · L5 · L6 |
| SBAS | L1C/A |
| Parameter | Value |
|---|
| Tracking Sensitivity | 20 dB-Hz |
| Acquisition Sensitivity | 30 dB-Hz |
| Cold Start TTFF | < 35 s |
| Warm Start TTFF | < 10 s |
| Reacquisition | 1 s |
| RTK Init Time | 7 s typical |
| RTK Accuracy (H) | 0.6 cm + 0.5 ppm |
| RTK Accuracy (V) | 1.0 cm + 1 ppm |
| Heading @ 5 m / 1 m | 0.03° / 0.15° (HB52H) |
| Pitch/Roll @ 5 m / 1 m | 0.05° / 0.25° (HB52H) |
Interface & Connectivity
| Parameter | Description |
|---|
| Communication | 2× UART (4,800 – 4 Mbps, default 115,200 bps) · I2C |
| Control & Timing | PPS · EVENT · SD card SPI interface |
| Antenna Bias | 3.0 – 5.5 V · 150 mA limit · Single LNA: 15–50 dB · Dual LNA: 15–35 dB |
| Protocols (Output) | NMEA 0183 (v2.3 / v3.03 / v4.0) · Septentrio SBF · RINEX |
| Correction Input | RTCM v3.x (MSM) · CMR / CMR+ |
| Data Storage | TF card slot · up to 32 GB |
Electrical & Operating Conditions
| Item | Value |
|---|
| Supply Voltage | 3.3 V / 5 V (VCC pin) |
| Antenna Bias Voltage | 3.0 – 5.5 V (150 mA current limit) |
| Operating Temperature | −40°C to +85°C |
| Storage Temperature | −40°C to +85°C |
| Certifications | CE · FCC · RoHS |
Physical
| Item | Value |
|---|
| Dimensions | 43.8 × 34.0 × 11.5 mm (±0.2 mm) |
| Onboard Storage | TF card slot · up to 32 GB |
| Integrated Components | TCXO · LNA · SD card interface |
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