NV-AH1000 Attitude and Heading Reference System (AHRS) delivers affordable, mini size and high performance measurements of attitude (Roll, Pitch and Heading), angle rate, and acceleration. The attitude and angle bias are optimally estimated via a 9-state Kalman filter with adaptable gain to provide best performance in high dynamic environment. This rug-designed AHRS system uses high reliable and stable MEMS sensors to provide reliable performance in harsh environment.