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Android磁力计计算高度

[英]Android Magnetometer calculate altitude

原文 2013-05-13 10:06:37 6 1 android/ magnetometer/ euler-angles/ altitude

Is it possible to get the altitude of my position using the Android magnetometer? 是否可以使用Android磁力计获得我的位置的高度？ If yes how can I calculate the altitude? 如果是，我该如何计算海拔高度？ As I understood I get from the Android API three coordinates x,y and z and the magnetic field strength in Tesla. 据我所知，我从Android API获得三个坐标x，y和z以及特斯拉的磁场强度。 I can transfer these coordinates into the Euler angles to determine the position, but I do not know if I can calculate the altitude. 我可以将这些坐标转换为欧拉角来确定位置，但我不知道我是否可以计算高度。 Does anybody know about that and is able to help me to figure out the altitude without using GPS? 有没有人知道这一点，并能够帮助我在不使用GPS的情况下找出海拔高度？

1 个解决方案

There is a reason most devices use GPS (which already has horrible dilutiuon when it comes to altitude calculation) or even a barometric system to calculate their altitude : Magnetic measurements are terribly unstable and perceptive to interference from outside, not to mention that the planet does not have a completely uniform magnetic field, and that it runs lateral with the surface rather than in a straight angle with it. 大多数设备都使用GPS（在高度计算方面已经有可怕的稀释度）或者甚至是气压系统来计算它们的高度是有原因的：磁性测量非常不稳定并且能够感知来自外部的干扰，更不用说地球了不具有完全均匀的磁场，并且它与表面横向延伸而不是与其成直角。

If you managed to get a decent altitude reading with a magnetometer, i think you would be elligable for a prize in the fields of mathematics, physics and programming. 如果你设法通过磁力计获得了不错的高度读数，我想你可以在数学，物理和编程领域获得奖项。