We use ADIS16488 in our stabilization projects and we noticed that after some time (approx. 7-8 months of non daily usage) stabilization parameters of our system get worse, than they were after production. The precision of stabilization is lower than before. We have not found any problems with our mechanical and servo parts, so it should be the sensor and it's processing algorithm, that affect this matter most.
So the question is: do ADIS sensors change their parameters (e.g. scaling factors of Gyros) with time? Which else factors could affect their specs? How could be this avoided and/or compensated?