有没有一种技术能够精确定位iPhone的*精确*位置（在室内/脚下）？ [英] Is there a technology that can pinpoint an iPhone's *exact* location (to the feet/couple feet, indoors)?

问题描述

有没有办法通过使用无线电/天线或位于房屋周围的其他基础设施（例如医院，购物中心，学校等）来确定iPhone的准确位置（室内，距离几英尺） ）。对于如何克服这种限制，我们将非常感谢任何想法/方向（技术，研究）。 解决方案

您可以控制（为特定学校/医院设置位置网络），而不是通用位置，您可以根据已知位置的AP的无线信号功率对您的位置进行三角测量。

如果您希望它是一个通用的解决方案，并且您知道在您想要的建筑物内/周围会有多个AP，则可以在建筑物外有GPS时对所有WiFi信号进行三角测量，然后当您失去gps准确度时参考这些位置。第一部分是许多wardriving应用程序已经做的事情。

这篇文章描述了一个用于此目的的高级细节的商业技术：链接

以下是SO页面的链接，人们已经开始讨论可能的方法：链接

Is there is a way to determine an iPhone's exact location (indoors, and to a distance of just a couple of feet) via use of radio/antenna's or some other infrastructure located around premises (i.e a hospital, shopping mall, school). Will appreciate any ideas/direction (technologies, research) as for how to overcome this limitation.

解决方案

If you mean for an area you have control over (setting up a location network for a specific school/hospital) as opposed to generic location, you'd be able to triangulate your position based on wifi signal power for APs with known locations.

If you wanted it to be a generic solution, and you know there would be multiple APs in/around the buildings you wanted, you could triangulate all wifi signals while you have GPS outside the building, and then reference those locations when you lose gps accuracy. The first part is something that many wardriving applications already do.

Here's an article describing a commercial technology for this purpose in high-level detail: link

And here's a link to a SO page where people have started discussing possible methodologies: link

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