Attitude and Heading Reference System (AHRS)

The GM301 is a navigation product independently developed by Beijing Xinpuni Technology Co., Ltd., covering a product range from Inertial Measurement Units (IMU) and Attitude and Heading Reference Systems (AHRS) to fully integrated GNSS/INS solutions. The GM301-AHRS Attitude and Heading Reference System (hereinafter referred to as the AHRS) incorporates a 3-axis inertial sensor assembly (gyroscopes and accelerometers) along with a 3-axis magnetometer. Featuring a proprietary sensor fusion algorithm, the system delivers continuous, high-accuracy position and attitude data across a wide range of demanding operational environments.
The GM301-AHRS incorporates an adaptive learning capability. By acquiring a complete dataset — including: 1. sufficient training data covering vessel navigation under full operating conditions, and 2. valid reference labels (BeiDou navigation validity flags) — the system applies a machine learning-based compensation method to achieve high-precision heading correction. In high-speed patrol boat and fast craft applications, the compensated magnetic heading accuracy over water exceeds 1° RMS.
The GM301-AHRS is a high-accuracy, high-real-time-performance, and high-reliability attitude and heading reference system.