In this paper PIGA error model is established based on all-round effect of error factor for PIGA.

在全面考虑影响陀螺加速度表的误差因素的基础上，建立了陀螺加速度表的误差模型。

This paper analyses the gravity effect of pendulosity, that is the variation phenomenon of PIGA pendulosity in the gravity field.

本文研究了摆性的重力效应，即积分陀螺加速度表的摆性在重力场作用下的变化现象。

The error source of the three-axis turntable is analyzed, which affect the precision of test of pendulous integrating gyro accelerometer (PIGA).

分析了三轴转台设备误差源；讨论了转台误差对陀螺加速度表测试精度的影响。