The AR-3A-EC by Aegiverse, a developer of Fiber Optic Gyro (FOG)-based inertial sensing technologies, is an advanced Attitude and Heading Reference System (AHRS) combining two axes of Micro-Electro-Mechanical Systems (MEMS) gyros and one axis of FOG with a three-axis accelerometer.
AR-3A-EC FOG AHRS.
Aegiverse’s solution delivers high-performance automatic attitude stabilization and inertial positioning inference, supported by sophisticated AI-based algorithms, for small-to-medium unmanned vehicles including Unmanned Aerial Vehicles (UAVs), Unmanned Ground Vehicles (UGVs), Unmanned Surface Vehicles (USVs), and Remotely Operated Vehicles (ROVs).
An unregulated product, the AR-3A-EC incorporates a built-in 6-axis MEMS Inertial Measurement Unit (IMU) integration design alongside its 1-axis closed-loop FOG architecture. The unit is housed in a compact 60 × 60 × 72 mm special cuboid block enclosure and weighs 300 g, supporting mass production, customer installation convenience, and easy integration.
Specifications
Aegiverse’s system delivers precise attitude performance, achieving roll and pitch accuracy of 0.020° and heading accuracy of 0.002° within 1 second.
MEMS gyros on the X and Y axes provide operating ranges of ±500°/s, while the Z-axis closed-loop FOG offers a high dynamic range of ±650°/s. Gyro bias instability is ≤ 3°/hr for the MEMS axes and ≤ 0.03°/hr for the FOG, with corresponding angle random walk values of ≤ 0.21 °/√hr and ≤ 0.01 °/√hr respectively.
The integrated three-axis accelerometer, operating over ±16 g, features a bias instability of ≤ 40 μg and velocity random walk of ≤ 60 μg/√Hz, contributing to the system’s inertial positioning capability.
The AR-3A-EC is well-suited to unmanned vehicle applications requiring advanced performance close to high-end product accuracy.
