The ACEINNA INS401 is a high-performance integrated navigation solution combining a GNSS/RTK receiver with a triple-redundant inertial sensor suite (accelerometers and gyroscopes). This GNSS-aided INS enables centimeter-level positioning accuracy, and provides reliable measurements of position, velocity, heading, attitude (pitch/roll), 3D acceleration, and 3D rotational rate. 
Because INS401 blends GNSS data with inertial measurements using a sophisticated EKF (Extended Kalman Filter), it remains robust even if GNSS signals are lost or degraded — e.g. in tunnels, urban canyons, under tree cover, or during signal jamming. 
The system is engineered for real-world, high-volume applications — from advanced driver-assistance systems (ADAS) and autonomous vehicles (cars, trucks, shuttles) to agricultural machinery, construction equipment, and robotics. Its specification supports high reliability and automotive-grade compliance: dual-frequency GNSS (multi-constellation), real-time kinematics (RTK), dual-antenna for accurate heading, and integrated inertial sensors ideal for dead-reckoning during GNSS outages.