谷歌室内导航是如何工作的? [英] How does Google Indoor Navigation work?
问题描述
对于我大学的一个项目，我必须收集有关 Google 室内地图的信息.我花了几个小时搜索有关 Google 室内导航如何真正运作的信息.我找到了几个关于如何像这样创建 Google 平面图的链接:
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=zh-CN&answer=1685896
以及如何使用 Google Maps Floor Plan Marker 应用提高位置准确性:
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
他们说该应用会收集公共广播数据.但是没有关于收集哪些信息以及如何收集的信息.这里的几个讨论和我发现的几篇文章说谷歌使用 wifi 接入点和蜂窝天线进行室内定位.但是我找不到任何可以在我的项目中使用的 Google 官方信息.
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.
您能否建议我在哪里可以找到以下问题的答案:
Can you suggest me where I can find answers to the following questions:
- Google 地图平面图标记的实际工作原理是什么?收集哪些信息以及如何收集?一份官方的 Google 技术论文会很不错，所以我可以将其用于我的工作.
- 如何通过添加 Wifi 接入点、蓝牙站或其他技术来提高 Google 室内导航的准确性?
- 如何将紧急出口和厕所等附加信息添加到平面图中，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房间以获取更多信息?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东西.但没有关于谷歌如何使用它们.
I found a lot stuff about indoor positioning and indoor navigation. But nothing about how google uses them.
提前致谢.
推荐答案
本项目只提供室内场所的地图.在超出标准(GPS、WiFi 等)的这些地方增强导航并没有什么特别之处.
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).
当他们谈论使用 Wifi 和蜂窝数据进行(增强)定位时，他们谈论的是他们在常规 Google 地图上使用的相同内容.这些数据是从手机信号塔信息中收集的，Wifi 的东西是从谷歌街景汽车中嗅出的，然后随着使用设备的人与这些设备接触并将信息发送回谷歌，通过用户数据进行增强.
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.
它不是非常准确 - 甚至不如 GPS 准确.这是一种球场"估计.例如，如果 Google 街景汽车在经过您家时检测到您的 WiFi 信号——如果您没有 GPS，并且 Google 地图看到了您的 WiFi 盒子，它可以估计您在距离您家几百英尺的地方.Google 街景汽车检测到了信号.
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.
不如 GPS 准确 - 但如果您在几百英尺范围内精简而不是不知道"，也不会太糟糕.简而言之 - 这些来源不会为您提供更好或更精细的室内场所定位.如果您在里面并且不在 GPS 覆盖范围内，它们会很好 - 例如 - 能够告诉您您在该特定建筑物中.
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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