The main work of the paper is for these cases . there are analog integral and digital integral . it was taken into account that the analog integral calls for high performance components , and hard to compensate , so the first part of my work is integral arithmetic analysis and simulate 本文的工作主要是针对以上情况展开的,积分可以采用模拟积分和数字积分两种,考虑到模拟积分对元件要求很高,而且不容易进行补偿,因此第一部分工作是数字积分算法的比较和仿真:选取合适的采样数据,从两个角度进行比较。