对比分析常用磁传感器的性能指标, 得出磁通门传感器作为地磁导航磁测传感器的相对优势性。针对磁通门传感器在低空亚音速飞行器上应用的可行性, 从分析磁通门传感器的基本原理入手, 通过对某地实测磁异常场数据的频谱分析, 利用奈奎斯特抽样定理从响应频率方面对其在低空亚音速飞行器上应用的可行性进行验证, 并提出在低空亚音速飞行器上应用的响应频率指标, 即磁通门传感器的响应频率达到40.8~68.0 Hz, 就能够满足其作为低空亚音速飞行器磁场数据采集前端的响应频率需求。

The relative advantages of fluxgate sensor applied to the geomagnetic navigation system were discussed by comparing its performance index with that of the commonly used magnetic sensors.The basic principle of the fluxgate sensor was analyzed.Then Nyquist sampling theorem was used to verify the feasibility of the fluxgate sensor applied to the subsonic low-altitude aircraft by spectrum analysis to the measured magnetic anomaly data in a county.A frequency response indicator was proposed for applying to the subsonic low-altitude aircraft i.e. when the response frequency of fluxgate sensor reach 40.8 Hz to 68.0 Hz it will be able to satisfy the response frequency requirements.