将 3 轴磁力计读数和加速度计转换为罗盘方位 (Win 7)
我一直在使用 来自 C# 的位置和传感器 API。
我可以访问我的板载 3 轴加速度计，它提供 X、Y、Z 输出，以及所谓的 3 轴磁力计，它提供“浮动”类型的单值输出，在我当前的情况下，该输出似乎在 120-160 之间变化。位置取决于方向（即，它不仅仅是计算方位）。
我看到网络上有各种文章推导了从加速度计和磁力计值的组合中提取罗盘方位的方程，以校正位置。所有解决方案都不是微不足道的，但它们还需要磁力计的 3 轴响应。我无法访问磁力计的 3 轴输出。任何比我更聪明的人都可以解释发生了什么以及我如何能够提取轴承值吗？
I've been looking at the sensors on my Samsung 700t in Windows 7 using the Location and Sensor API from C#.
I can get access to my onboard 3-axis accelerometer which gives X,Y,Z outputs and a so-called 3-axis Magnetometer which gives a single value output of type 'float' which seems to vary from 120-160 in my current location depending on orientation (i.e. it is not just calculating a bearing).
I see that there are various articles around the web that derive equations for extracting compass bearing from a combination of accelerometer and magnetometer values correcting for location. None of the solutions is trivial, but they also require 3-axes of response from the magnetometer. I don't have access to 3-axes of output from my magnetometer. Can anyone brighter than me explain what's going on and how I might be able to extract a bearing value?
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看起来该读数是轴承读数。它只是阻尼很重，反应缓慢，并且对附近的磁场（例如扬声器）非常敏感。这就是读数不正确的原因。 API 返回了正确的结果。
It appears that the reading is a bearing reading. It's just heavily damped, slow to react and very sensitive to nearby magnetic fields such as speakers. This was the cause of the incorrect reading. The API was giving back correct results.