| Citation: | ZHOU Binquan, HAO Jiepeng, LIANG Xiaoyang, et al. Experimental study on electromagnetic noise suppression of atomic spin gyroscope heating chamber[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(1): 36-42. doi: 10.13700/j.bh.1001-5965.2016.0964(in Chinese)
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Atomic spin gyroscope is the latest type of gyroscope, which has ultra-high theoretical precision. Alkali vapor cell is the sensing element of atomic spin gyroscope, which carries the atomic spin effect. Electric heating makes alkali attain saturated vapor pressure, which will introduce electromagnetic interference and other noises, thereby affecting the accuracy and sensitivity of atomic spin gyroscope. To reduce the influence of heating chamber electromagnetic noise on the atomic spin gyroscope, the electromagnetic noise suppression experiment was studied from two aspects of heater structure and heating driving signal. A special shaped heating film with magnetic noise suppression was designed. A high frequency sine wave was designed as the heating driving signal. In addition, a non-magnetic heating system of alkali vapor cell was constructed. The test results show that the equivalent magnetic noise is within 17 fT/Hz1/2, and the temperature stability of the alkali vapor cells is within ±0.006℃, which provides a reliable guarantee for the performance improvement of atomic spin gyroscope.
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