The method to measure body's inertial mass is proposed by measuring period of vibration with the integrated hall switch sensor, when spring oscillator is in situation of simple harmonic vibration.
The navigation accuracy of the inertial navigation system can be increased greatly by using these techniques, and so that the calibration and the reset period can be extended.
此项技术可以有效地提高惯性导航系统的导航精度，并可大幅度地延长校准和重调周期。
3
When the inertial balance is put into horizon, verticality and incline, the influences of gravity on vibration period of inertial balance are discussed.