Swegeo GD-MH
Dual Antenna GNSS Receiver Board
Key Feature
The Swegeo GD-MH board offers exceptional performance with its dual-antenna input, providing precise and reliable heading information combined with centimeter-level RTK positioning. This advanced board delivers accurate heading and pitch or heading and roll angles immediately at startup, facilitating rapid initialization of inertial sensors that rely on movement for attitude measurements. Designed for both static and dynamic applications, the Swegeo GD-MH ensures advanced automation and navigation capabilities while maintaining reduced power consumption. Its compact form factor and dual-antenna GNSS technology enable superior heading precision and navigation performance in a variety of use cases.
Dual antenna support for sub-degree heading & pitch or heading & roll angles
The board supports dual antennas to provide highly accurate heading and pitch or heading and roll angle measurements. This feature enables precise orientation and navigation by offering sub-degree accuracy, essential for applications requiring detailed directional information.
All-in-view satellite tracking: multi-constellation, multi-frequency
The board can track satellites from all available GNSS constellations (GPS, GLONASS, Galileo, BDS, QZSS) across multiple frequencies. This comprehensive tracking capability ensures reliable positioning data under various conditions and improves overall accuracy.
Best-in-class RTK performance
The board delivers top-tier Real-Time Kinematic (RTK) positioning performance, providing centimeter-level accuracy in real-time. This makes it suitable for applications that require the highest precision in positioning data.
OSNMA Support
The board supports OSNMA (Open Service Navigation Message Authentication), a security feature that helps verify the authenticity of GNSS signals, enhancing the reliability and trustworthiness of the positioning data.
AIM+ industry-leading anti-jamming, anti-spoofing technology
Equipped with AIM+ technology, the board offers advanced anti-jamming and anti-spoofing capabilities. This technology helps protect against signal interference and spoofing attacks, ensuring accurate and reliable GNSS performance even in challenging environments.
Lowest power consumption on the market
The board is designed to be highly energy-efficient, with the lowest power consumption among competing products. This feature is particularly beneficial for battery-operated and energy-sensitive applications, extending operational time and reducing power requirements.
Standard mosaic footprint enables several application-specific solutions based on a single design
The board’s design features a standard mosaic footprint, allowing for versatile application-specific solutions. This standardization facilitates the development of various products and systems based on a single design platform, simplifying integration and reducing development costs.
Automated Machine Control:
The GD-MH delivers instant heading and pitch/roll information, which is valuable for controlling heavy equipment in construction or mining. For instance, an excavator guidance system can use this board to know its exact orientation on a worksite without waiting for movement. Integrators in construction technology embed the GD-MH in bulldozer or road grader systems to provide sub-degree heading accuracy and precise blade tilt measurements immediately at startup. This leads to faster machine initialization and improved automation—machines can start grading or digging with full precision from the get-go, rather than performing calibration passes.
Surveying & Mapping Rovers:
Survey rover manufacturers use the GD-MH board in high-end mobile mappers that require both position and attitude. A backpack-mounted mobile mapper or vehicle-based LiDAR scanner can integrate this board so that as it moves through an area, it logs the path with RTK precision and records the device’s orientation (heading and incline). This is essential for accurately georeferencing point clouds or panoramas. The board’s all-constellation tracking and top-tier RTK performance ensure these survey systems maintain fix even in partially obstructed environments (like under trees or near tall buildings).
Security and Military Robotics:
Designers of unmanned ground vehicles (UGVs) or robotic defense platforms choose the GD-MH for its reliable dual-antenna navigation. In applications like border patrol robots or reconnaissance UGVs, the board provides stable navigation data – the robot knows its direction and can report orientation (e.g., to aim cameras or antennas) with a high degree of certainty. The anti-jamming and spoofing features (AIM+ technology) are particularly beneficial in these scenarios, as they protect the robot’s navigation from intentional interference, which is crucial for mission-critical operations.
| Feature | Specification | Feature | Specification |
|---|---|---|---|
| Signal Supported |
GPS: L1, L2 Galileo: E1, E5b GLONASS: L1, L2 Beidou: B1, B2, B3 QZSS: L1C/A, L1C/B, L2 SBAS: EGNOS, WAAS, GAGAN, MSAS, SDCM (L1) |
Channels | 448 channels |
| RTK Performance Accuracy |
Horizontal: 0.6 cm + 0.5 ppm Vertical: 1 cm + 1 ppm |
Other Positioning Modes Accuracy |
Horizontal / Vertical Standalone: 1.2 m / 1.9 m SBAS: 0.6 m / 0.8 m DGNSS: 0.4 m / 0.7 m |
| Velocity Accuracy | 3 cm/s | Data Update Rate |
Measurements only: 100 Hz Standalone, SBAS, DGPS + attitude: 50 Hz RTK + attitude: 20 Hz |
| Initialization / Time to First Fix |
Cold start: < 45 s Warm start: < 20 s Re-acquisition: 1 s |
RTK Performance Accuracy (Repeat) |
Horizontal: 0.6 cm + 0.5 ppm Vertical: 1 cm + 1 ppm |
| GNSS Attitude Accuracy |
Antenna Separation | Heading | Pitch/Roll 1 m: 0.15° | 0.25° 5 m: 0.03° | 0.05° |
Dimensions | 71.1 x 45.7 x 1.62 mm |
| Weight | 644 gram | Input Voltage | 3.3 V DC |
| Connectors |
RS232 x 2 USB x 1 Bluetooth (Long Range SPP) |
Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Storage Temperature | -55°C to +85°C (-67°F to +185°F) | Humidity | 5% - 95% (non-condensing) |
| Vibration / Shock | MIL-STD-810G |
Swegeo GD-MH
Dual Antenna GNSS/INS Receiver Board
Key Feature
The Swegeo GD21D-INS board is designed to deliver high-precision navigation capabilities in a compact form factor. It features advanced anti-jamming technology with 65 dBc narrowband suppression and high-performance RTK for reliable positioning. The board offers a deeply-coupled combined navigation solution to address challenges such as satellite signal interference and multipath effects. It provides continuous, real-time, and accurate position and attitude information, making it ideal for applications including automated driving, drones, precision agriculture, surveying, and mapping.
OVERVIEW
Multi-Constellation GNSS Support
Provides reliable and robust signal reception from GPS, GLONASS, Galileo, and
BeiDou systems, ensuring comprehensive coverage and improved accuracy.
Dual Antenna Configuration
Enhances positioning accuracy and performance, particularly in challenging
environments, by using two antennas to better mitigate signal obstructions and
multipath effects.
USE CASES
Automated Machine Control:
The GD-MH delivers instant heading and pitch/roll information, which is valuable for controlling heavy equipment in construction or mining. For instance, an excavator guidance system can use this board to know its exact orientation on a worksite without waiting for movement. Integrators in construction technology embed the GD-MH in bulldozer or road grader systems to provide sub-degree heading accuracy and precise blade tilt measurements immediately at startup. This leads to faster machine initialization and improved automation—machines can start grading or digging with full precision from the get-go, rather than performing calibration passes.
Surveying & Mapping Rovers:
Survey rover manufacturers use the GD-MH board in high-end mobile mappers that require both position and attitude. A backpack-mounted mobile mapper or vehicle-based LiDAR scanner can integrate this board so that as it moves through an area, it logs the path with RTK precision and records the device’s orientation (heading and incline). This is essential for accurately georeferencing point clouds or panoramas. The board’s all-constellation tracking and top-tier RTK performance ensure these survey systems maintain fix even in partially obstructed environments (like under trees or near tall buildings).
Security and Military Robotics:
Designers of unmanned ground vehicles (UGVs) or robotic defense platforms choose the GD-MH for its reliable dual-antenna navigation. In applications like border patrol robots or reconnaissance UGVs, the board provides stable navigation data – the robot knows its direction and can report orientation (e.g., to aim cameras or antennas) with a high degree of certainty. The anti-jamming and spoofing features (AIM+ technology) are particularly beneficial in these scenarios, as they protect the robot’s navigation from intentional interference, which is crucial for mission-critical operations.
APPLICATIONS
TECHNICAL SPECIFICATIONS
| Feature | Specification | Feature | Specification |
|---|---|---|---|
| Signal Supported |
GPS: L1, L2 Galileo: E1, E5b GLONASS: L1, L2 Beidou: B1, B2, B3 QZSS: L1C/A, L1C/B, L2 SBAS: EGNOS, WAAS, GAGAN, MSAS, SDCM (L1) |
Channels | 448 channels |
| RTK Performance Accuracy |
Horizontal: 0.6 cm + 0.5 ppm Vertical: 1 cm + 1 ppm |
Other Positioning Modes Accuracy |
Horizontal / Vertical Standalone: 1.2 m / 1.9 m SBAS: 0.6 m / 0.8 m DGNSS: 0.4 m / 0.7 m |
| Velocity Accuracy | 3 cm/s | Data Update Rate |
Measurements only: 100 Hz Standalone, SBAS, DGPS + attitude: 50 Hz RTK + attitude: 20 Hz |
| Initialization / Time to First Fix |
Cold start: < 45 s Warm start: < 20 s Re-acquisition: 1 s |
RTK Performance Accuracy (Repeat) |
Horizontal: 0.6 cm + 0.5 ppm Vertical: 1 cm + 1 ppm |
| GNSS Attitude Accuracy |
Antenna Separation | Heading | Pitch/Roll 1 m: 0.15° | 0.25° 5 m: 0.03° | 0.05° |
Dimensions | 71.1 x 45.7 x 1.62 mm |
| Weight | 644 gram | Input Voltage | 3.3 V DC |
| Connectors |
RS232 x 2 USB x 1 Bluetooth (Long Range SPP) |
Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Storage Temperature | -55°C to +85°C (-67°F to +185°F) | Humidity | 5% - 95% (non-condensing) |
| Vibration / Shock | MIL-STD-810G |