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The G27SH-AH is a multi-frequency, multi-constellation positioning and orientation Smart Antenna. It delivers low latency and predictable delay, which is vital for stable, precise control systems. Supporting all current and future GNSS signal formats, it ensures compatibility with mainstream open-source autopilots. The module is ideal for high-precision applications, including UAVs, autonomous robots, precision control, and driverless technology.
Product Features
Utilises high-performance chip
Full-view satellite tracking, multi-constellation and multi-frequency
789 hardware channels enabling simultaneous operation
Navigation update rate up to 20Hz
Ultra-low latency below 10 milliseconds
Supports GPS, GLONASS, BDS, Galileo, QZSS, Navic, and SBAS satellites
Integrated TF card slot accommodating up to 32GB
Supports standard NMEA 0183, SBF, RINEX, RTCM, CMR/CMR+ protocols
AIM+ features advanced interference and spoofing detection with automatic mitigation
LOCK+ delivers robust tracking resilience against mechanical shock and vibration
IONO+ incorporates advanced ionospheric interference protection
APME+ mitigates multipath effects by separating direct signals from reflections off nearby structures
Provides complete raw measurement data
Features interference indicators, mitigation capabilities, and spectrum measurement functions
Supports ultra-short baseline heading output
Standard IP67 waterproof and dustproof design
Overpressure explosion-proof design
Performance
| Operating voltage | Specification |
| Constellation Frequency | GPS: L1C/A, L1C, L2C, L2P(Y), L5 |
| BDS: B1I, B1C, B2a, B2I, B2b, B3I | |
| GLONASS: L1CA, L2CA, L2P, L3 CDMA | |
| Galileo: E1, E5a, E5b, E6 | |
| QZSS: L1C/A, L1C/B, L2C, L5, L6 | |
| Time to First Fix | Cold Start: <35 s |
| Warm Start: <10 s | |
| RTK Status | Horizontal: 0.6 cm + 0.5 ppm |
| Vertical: 1 cm + 1 ppm | |
| Horizontal / Vertical | |
| Standalone: 1.2 m/1.9 m | |
| DGNSS: 0.4 m/0.7 m | |
| Heading Accuracy | Heading / Pitch/Roll |
| 1m Antenna Spacing: 0.15°/0.25° | |
| 5m Antenna Spacing: 0.03°/0.05° | |
| Latency | 99.9%:<10ms |
| Operating voltage (Device) | 4−12V (Regular 5V) |
| Velocity Accuracy | 0.03 m/s |
| Baud Rate | 4800-4M bps (default 115200） |
| Maximum Data Update Rate | 20 Hz |
| Operating temperature (Device) | −40℃∼85℃ |
| Storage temperature (Device) | −40℃∼85℃ |
| Protection rate | IP67 |
| Data Interface | G27 male aviation plug (7pins) |
| Antenna Interface | TNC-KY-1.5 RF female connector |
| Size (Device) | Φ 128*52 mm |
| Weight (Device) | ≈291 g |
Pin Parameters
| No. | Wire Color | Name | Input/Output | Description |
| Connector: GX12 Aviation Plug (7-pin) | ||||
| 1 | Red | VCC | Input | GNSS Power Supply 3.5-12.0V, typical 5V |
| 2 | Black | GND | - | Ground |
| 3 | Yellow | TX2 | Output | Port 2 GNSS Transmit Data |
| 4 | White | RX2 | Input | Port 2 GNSS Receive Data |
| 5 | Green | TX1 | Output | Port 1 GNSS Transmit Data |
| 6 | Blue | RX1 | Input | Port 1 GNSS Receive Data |
| 7 | Orange | PPS | Input | Pulse Per Second signal |
TNC-KY-1.5 RF Female Connector: Enables positioning and directional control via external antenna. | ||||
Product Application
Drone applications
Geological hazard monitoring
Intelligent logistics dispatch
Heading output
Intelligent robotics
Vehicle-mounted equipment applications
Geodetic surveying
In-vehicle navigation
Precision agriculture and positioning services
Precision control
Agreement Explanation
| Protocol | Type |
| NMEA 0183 v2.3, v3.03, v4.0 | Input/output, ASCII |
| Septentrio Binary Format (SBF) | Input/output |
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