Dear Mark, I have an ADIS16488BMLZ for using in robot navigation for an academic research.
I believe that this sensor could achieve the accuracy under 1 degree in heading with proper calibration (both gyro and magnetometer). I have tried different methods for magnetometer calibration such as ellipsoid fitting and kalman filter. but the accuracy is about 5 degree!
the problem with gyro is when moving the sensor to the nearby and then to the initial location, the attitudes are vary in some degree!
I have calculate the bias with averaging method,but it seems there are more things to do to achieve a good response.
I know calibration methods is part of you IP, but could you please help me with some guidelines for appropriate calibration?