针对所研制的一种能够测量加速度直流信号的光纤加速度计，建立了影响该加速度计测量准确度的光学原理误差、交叉灵敏度误差以及温度引起的误差模型，并对该模型进行了仿真和实验分析.结果表明：随着信噪比增加以及光谱采样间隔减小，解调算法的测量误差水平降低，测量准确度可达到4.5×10－5g；在1倍重力加速度下交叉灵敏度误差为1.8 mg；当环境温度20℃时，温度每升高（降低）1℃，会使标度因数增加（减小）0.79‰.

The model of the optical priciple error, the cross sensitivy error and the error induced by temperature were built. These errors have affected the measurement precision of a fiber optic accelerometer which can be used to measure the direct current signal of acceleration. With a purpose of obtaining the exact data, the simulation and experiment were conducted. Results show that, the measurement errors of interrogation algorithm decrease with the signal-to-noise ratio increasing and the spectrum sampling interval shortening, and the measurement accury is 4.5×10－5; under the effect of one time gravitational acceleration, the cross sensitivity error is 1.8 mg; the scale factor will increase(decreas) 0.79‰ when the temperature rises (drops) 1℃.