The results show that the geomagneticinterference noise mainly originated from the electromagnetic interference in the Xiangshan region, and subsequently from the subway in the Beijing City.
结果表明，该地磁干扰噪声主要是来自香山一带的电磁干扰，其次是北京市的地铁干扰。
2
The interference of carrier magnetic field to geomagnetic field has been a difficult problem for a long time, which has influence on navigation compass deviation and geomagnetic measurement.
载体磁场对地磁场的干扰，一直是影响导航罗差、地磁测量的技术难题。
3
The interference of carrier magnetic field to geomagnetic field has been a difficult problem for a long time, which has influence on navigation compass deviation and geomagnetic measurement.