Google室内导航如何工作？ [英] How does Google Indoor Navigation work?
问题描述
对于我在大学的项目，我必须收集有关Google室内地图的信息。我花了几个小时搜索关于Google室内导航真正起作用的信息。我已经找到了几条关于如何创建Google Floor Plan的链接：
http://support.google.com/gmm/bin/answer.py?hl=zh_CN&answer=1685896
以及如何通过Google地图平面图标记应用程序提高定位精度：
他们说应用程序会收集公共广播数据。但没有关于哪些信息被收集的信息以及如何。在这里进行的几次讨论以及我发现的几篇文章都说谷歌使用WiFi接入点和蜂窝天线进行室内定位。但是我找不到Google的任何官方信息，我可以在我的项目中使用它。
你能否建议我在哪里可以找到以下问题的答案：
- Google地图平面图标记如何真正起作用？收集哪些信息以及如何？官方的Google技术文章应该很好，所以我可以将其用于我的工作。
- 如何通过添加无线接入点，蓝牙电台或更高版本来提高Google室内导航的准确性其他技术？
- 如何将附加信息（如紧急出口和厕所）添加到平面图中，以便用户可以使用智能手机导航到这些特殊点？
- 是否可以添加有关房间的信息，以便用户可以用手指点击以获取更多信息？例如哪个部门位于这个房间等等？
我发现了很多关于室内定位和室内导航的内容。但没有关于谷歌如何使用它们的信息。
预先致谢。
<这个项目只提供室内地点的地图。它没有做任何特殊的事情来增强这些地方的导航功能（GPS，WiFi等）。
当他们谈论（增加）与Wifi的定位和蜂窝数据，他们正在谈论他们在常规谷歌地图上使用的相同内容。这些数据是从手机信息塔收集而来的，Wifi的东西是从谷歌街景汽车中嗅探出来的，然后随着用户数据的增加而增加，因为有设备的人会接触这些设备并将信息发送回Google。
它非常准确 - 甚至不像GPS那样准确。这是一种球场估计。例如，如果Google街景车在您的家中驾驶时检测到您的WiFi信号 - 如果您没有GPS，并且Google地图看到了您的WiFi盒，则可能估计您位于距离您的家中几百英尺谷歌街景车检测到信号。
不像GPS那么准确 - 但不是太糟糕了，如果你在几百英尺内精确地比不知道。简而言之，这些来源不是为您提供更好的室内场所的更精确的定位。例如，他们会很好 - 能够告诉你，如果你在里面，并且没有GPS覆盖范围，你就在那个特定的建筑物中。
For a project at my university I have to collect information about Google Indoor Maps. I spent several hours searching information about how Google Indoor Navigation really works. I've found several links on how to create Google Floor Plans like this:
http://support.google.com/gmm/bin/answer.py?hl=en&answer=1685896
And how you can improve location accuracy with the Google Maps Floor Plan Marker app:
http://support.google.com/gmm/bin/answer.py?hl=en&answer=2667756&topic=1685871&ctx=topic
They say the app collects public broadcast data. But nowhere information about which information is collected and how. Several discussions here and a few articles I found say that google uses wifi-access points and the cellular antennas for indoor positioning. But I couldn't find any official information from Google, which I can use in my project.
Can you suggest me where I can find answers to the following questions:
- How does the Google Maps Floor Plan Marker really work? Which information is collected and how? A official technical Google paper would be nice, so I can use that for my work.
- How can I increase the accuracy of the Google indoor navigation, by adding Wifi Access Points, Bluetooth stations or other technology?
- How can I add additional information like Emergency exits and toilets to a floor plan, so the user can navigate with his smartphone to this special points?
- Is it possible to add information about rooms, so the user can tap with the finger on them to get additional information? For Example which department is situated in this room and so on?
I found a lot stuff about indoor positioning and indoor navigation. But nothing about how google uses them.
Thanks in advance.
This project just provides maps for indoor places. It doesn't do anything special to augment navigation in these places beyond the standard (GPS, WiFi, etc).
When they talk about (augmenting) positioning with Wifi and Cellular data, they are talking about the same stuff they use on the regular Google maps. This data is collected from cell tower info, and the Wifi stuff is sniffed from the Google street-view cars and then augmented by user-data as people with devices come into contact with these devices and send info back to Google.
It is not very accurate - or even accurate as GPS. It is kind of a "ballpark" estimate. For example, if a Google street-view car detected your WiFi signal when it drove by your house - if you had no GPS, and Google Maps saw your WiFi box, it could estimate that you were somewhere within a few hundred feet of where the Google Street View car detected the signal.
Not as accurate as GPS - but not too bad if you conciser within a few hundred feet better than "no idea". In short - these sources to not give you better or more refined positioning of indoor places. They would be good - for example - to be able to tell you that you are in that particular building if you were inside, and out of GPS coverage.
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