Several smartphone models on the Android and iOS platforms have been investigated for their ability to detect geomagnetic storms. Although this capability could have scientific application, there is a growing commercial interest in using smartphones for precision location applications not involving the GPS system. Under these circumstances, geomagnetic storms could in principle interfere with navigation accuracy. The ability of smartphones to detect geomagnetic disturbances has been tested by developing synthetic magnetometer data for two historical storm events: October 29, 2003 (G5) and July 15, 2012 (G2). These were created by combining typical sensor noise profiles with actual magnetic observatory data, and also by using a Helmholtz coil to calibrate the magnetometer responsivity near 1 microTesla. A comparison of the iPhone 6S, Samsung Note 5, Galaxy S8, and S9 responses based upon their actual ambient noise measurements reveals that for the high and mid-latitude simulations, storms stronger than G2 (Kp = 6) provided indications of detectability, with the strongest detections occurring for the high-latitude simulations. The low-latitude simulated observations near North American latitudes of +38° tended to register storm events at about G4 (Kp = 8) or above. The degree to which geomagnetic storms interfere with precision position measurement applications can be significant at high latitudes for the occasional strong storm events during the peak of the sunspot cycle, but are probably not a significant source of error at other times for most low-latitude conditions.

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智能手机能探测到地磁风暴吗？

Android 和 iOS 平台上的几款智能手机型号已针对其检测地磁风暴的能力进行了调查。尽管这种能力可能具有科学应用，但使用智能手机进行不涉及 GPS 系统的精确定位应用的商业兴趣日益浓厚。在这种情况下，地磁风暴​​原则上会干扰导航精度。智能手机检测地磁扰动的能力已经通过为两个历史风暴事件开发合成磁力计数据进行了测试：2003 年 10 月 29 日 (G5) 和 2012 年 7 月 15 日 (G2)。这些是通过将典型的传感器噪声曲线与实际的磁天文台数据相结合而创建的，并且还通过使用亥姆霍兹线圈来校准接近 1 微特斯拉的磁力计响应度。iPhone 6S、三星Note 5的对比，Kp  = 6) 提供了可检测性的指示，其中最强的检测发生在高纬度模拟中。北美纬度 +38° 附近的低纬度模拟观测倾向于记录大约 G4（Kp  = 8）或以上的风暴事件。地磁风暴对精确位置测量应用的干扰程度在高纬度地区对于太阳黑子周期高峰期间偶尔的强风暴事件可能很重要，但在其他时间对于大多数低纬度条件而言可能不是重要的误差源.