Title :
Closed-loop system of Cesium atomic magnetometer and its characteristics
Author :
WenHui Zhao ; YuHui Dong
Author_Institution :
Dept. of Sci., Harbin Eng. Univ., Harbin, China
Abstract :
After selecting proper frequency tracking method and designing of the Digital Automatic Frequency Tracking (DAFT) system, a closed-loop system of Cesium atomic magnetometer is implemented. Some characteristics of the closed-loop system are analyzed in detail through experiments. Experiment results show that the peak to peak jitter is no more than 3pT within 1 minute and 9pT within 1 hour, the closed-loop sensitivity is 0.12pT/Hz1/2, and the response bandwidth is only 1.2Hz in 3dB.
Keywords :
caesium; closed loop systems; jitter; magnetometers; Cs; DAFT system; bandwidth 1.2 Hz; cesium atomic magnetometer; closed-loop system; digital automatic frequency tracking system; gain 3 dB; jitter; time 1 hour; time 1 min; Closed loop systems; Frequency modulation; Magnetic domains; Magnetic field measurement; Magnetometers; Resonant frequency; Cesium atomic magnetometer; Digital Automatic Frequency Tracking (DAFT); closed-loop system;
Conference_Titel :
Systems and Informatics (ICSAI), 2014 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4799-5457-5
DOI :
10.1109/ICSAI.2014.7009346
