This paper describes the thermal sensitivity drift dynamic test system form and the measures of the accelerometer, analyzes the main factor influencing the test result.

Accelerometer of platform is used to measure the attitude of carrier. Gravity component at two input axes of DTG is calculated. The Gyro drift model is made to compensate the azimuth.

By using this method, the mathematical models have been established for random drift process of the dynamically tuned gyro and the flex-accelerometer.