High-Precision G27SH-AH Multi-Frequency GNSS RTK Receiver for Autonomous Systems and Robotics Applications

G27SH-AH Multi-Frequency GNSS RTK Receiver: Enabling High-Precision Positioning and Heading for Autonomous Systems

Dec 11, 2025

G27SH-AH multi-frequency GNSS RTK receiver showing industrial design and interface layout.

As demand grows for centimeter-level positioning, resilient interference mitigation, and reliable GNSS heading, the G27SH-AH emerges as a compact multi-frequency GNSS receiver designed for professional systems requiring predictable low-latency performance. Built on a high-performance GNSS chipset and supporting full-constellation, full-band tracking, the module integrates rich interfaces, advanced anti-interference features, and dual-antenna heading capability to support autonomous platforms in demanding environments.

Full-Constellation, Multi-Frequency GNSS Architecture

The G27SH-AH tracks all major global constellations—GPS, BDS, GLONASS, Galileo, QZSS, NavIC, and SBAS—across multiple frequency bands . With 789 hardware channels, it maintains robust satellite visibility, enabling stable positioning even in urban canyons and high-dynamics operating conditions. The module supports standard NMEA-0183 (v2.3–v4.0), SBF, RTCM, CMR/CMR+, and RINEX formats, simplifying integration with existing workflows and software ecosystems.

Low-Latency, High-Rate Positioning

Designed for real-time control systems, the receiver delivers:

● <10 ms latency (99.9%)

● 20 Hz maximum update rate

● RTK accuracy down to 0.6 cm + 0.5 ppm (horizontal) and 1 cm + 1 ppm (vertical) under standard conditions

These characteristics make the G27SH-AH suitable for precise motion control, guidance algorithms, and survey-grade positioning applications.

Advanced Anti-Interference and Multipath Mitigation

Positioning reliability is reinforced by integrated AIM+, LOCK+, IONO+, and APME+ technologies, which enhance protection against:

● Broadband and narrowband interference

● Ionospheric disturbances

● Multipath effects caused by reflective surfaces

Receiver status, spectrum analysis, and anti-interference configuration are accessible through RxTools software, supporting diagnostic workflows and system-level tuning.

Dual-Antenna GNSS Heading with Sub-Degree Accuracy

The G27SH-AH supports both single-antenna and dual-antenna operation. When two antennas are deployed, the module outputs reliable GNSS heading with accuracy dependent on baseline length—for example, 0.15° heading accuracy at 1 m spacing . This enables high-precision attitude estimation for autonomous platforms such as mobile robots, UAVs, and unmanned ground vehicles.

Engineering-Ready Interfaces and Data Logging

The module integrates:

● Dual UART communication ports

● PPS and Event I/O

● Integrated TF card slot (up to 32 GB) for NMEA and SBF data recording

● Configurable real-time streaming and post-processing raw data

Both RxTools and Datalink software support configuration, data logging, firmware upgrade, and diagnostic reporting, accelerating deployment for engineering teams.

Applications Across Autonomous and Industrial Domains

G27SH-AH Multi-Frequency GNSS RTK Receiver: Enabling High-Precision Positioning and Heading for Autonomous Systems

The G27SH-AH is engineered for systems requiring stable, accurate, and repeatable positioning performance, including:

● UAVs / Drones

● Smart logistics and unmanned delivery

● Robotics and autonomous mobile robots (AMRs)

● Geomatics and surveying

● Precision agriculture

● Geological disaster monitoring

● Vehicle-mounted navigation and precision control

Its IP67 protection and robust tracking capability allow operation in harsh environmental and vibration-intensive scenarios.