An improved algorithm is proposed in this paper,which can compensate the decaying DC component and completely filter it theoretically,without knowing the decaying time constant or adding sample point.

• 该文提出了一种改进算法,不需要增加采样点数,就能在未知衰减时间常数的情况下对衰减直流分量进行补偿,理论上能完全滤除衰减直流分量。