Jun Zhu;Liwei Jiang;Jiali Liu;Xin Zhao;Chi Fang;Qi Shao;Yuntian Zou;Zhuo Wang
{"title":"Suppression of Heading Error in Bell-Bloom Atomic Magnetometer by Controlling RF Magnetic Field","authors":"Jun Zhu;Liwei Jiang;Jiali Liu;Xin Zhao;Chi Fang;Qi Shao;Yuntian Zou;Zhuo Wang","doi":"10.1109/TIM.2024.3485395","DOIUrl":null,"url":null,"abstract":"The atomic magnetometers operated in Earth-scale magnetic field are susceptible to the nonlinear Zeeman (NLZ) effect, resulting in multiple resonance peaks and heading error, which restricts their practical applications. We introduce a spin-locking method based on magnetic field modulation to overcome the NLZ effect and thus suppress the heading error in atomic magnetometers. The suppression effect of spin-locking is proportional to the amplitude of the modulation field. However, an excessively high modulation field amplitude can lead to broadening of the measurement linewidth. A novel model characterizing the linewidth for the amplitude of modulated magnetic field under different environmental magnetic field is established by considering the NLZ effect. From the test results, the novel model can more accurately predict the linewidth under different environmental magnetic fields compared with traditional models. The optimized amplitude of modulated magnetic field is obtained based on the linewidth model, and the heading error is suppressed by about 80% within the magnetic field inclination angle of 28.76°. The theory and method presented here are important for the application of magnetometers in Earth-scale magnetic field, which can suppress the heading error while keeping the linewidth unchanged.","PeriodicalId":13341,"journal":{"name":"IEEE Transactions on Instrumentation and Measurement","volume":null,"pages":null},"PeriodicalIF":5.6000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Instrumentation and Measurement","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10736980/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The atomic magnetometers operated in Earth-scale magnetic field are susceptible to the nonlinear Zeeman (NLZ) effect, resulting in multiple resonance peaks and heading error, which restricts their practical applications. We introduce a spin-locking method based on magnetic field modulation to overcome the NLZ effect and thus suppress the heading error in atomic magnetometers. The suppression effect of spin-locking is proportional to the amplitude of the modulation field. However, an excessively high modulation field amplitude can lead to broadening of the measurement linewidth. A novel model characterizing the linewidth for the amplitude of modulated magnetic field under different environmental magnetic field is established by considering the NLZ effect. From the test results, the novel model can more accurately predict the linewidth under different environmental magnetic fields compared with traditional models. The optimized amplitude of modulated magnetic field is obtained based on the linewidth model, and the heading error is suppressed by about 80% within the magnetic field inclination angle of 28.76°. The theory and method presented here are important for the application of magnetometers in Earth-scale magnetic field, which can suppress the heading error while keeping the linewidth unchanged.
期刊介绍:
Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.