FHD分量核旋仪观测系统的抗干扰技术

中国地磁台网自数字化改建后，引入了基于分量质子旋进式磁力仪观测模式的FHD质子磁力仪。经过多年的观测实践，该仪器取得很好的观测效果，但在观测中也发现了一些新的问题。为解决观测中存在的问题，获得更高质量的观测数据，适应更高观测标准的要求，对FHD质子磁力仪进行了升级改进研究。本文主要介绍我国地磁台网FHD质子磁力仪在观测中存在的问题及其对应的解决方案，并给出了改进后FHD质子磁力仪的观测实验结果。

Progress of the improved FHD proton magnetometer

The FHD vector proton magnetometers based on proton precession observation model have been introduced into the Geomagnetic Network of China (GNC) since the digital reconstruction of geomagnetic observatories. Up to now, these instruments have been practiced for many years and good observation results have been achieved. However, some new problems appeared during the observation. To solve these problems and achieve higher quality observation data for meeting the higher observation standards, the FHD vector proton magnetometer has been upgraded and improved. This paper mainly introduces the problems existing in the FHD vector proton magnetometer observation of GNC, discusses the corresponding solutions, and presents the experimental results of the improved FHD proton magnetometer.