用于氦光泵磁力仪的数字滤波器设计

郭琦, 邓肖丹, 李学砚, 栾晓东, 李萌, 李冰, 谢民英, 范正一

Design of a digital filter for optically pumped helium magnetometers

GUO Qi, DENG Xiao-Dan, LI Xue-Yan, LUAN Xiao-Dong, LI Meng, LI Bing, XIE Min-Ying, FAN Zheng-Yi

图13 用于基波信号提取的锁相放大器

Fig.13 Lock-in amplifier for fundamental signal extraction