在没有信标的情况下在机场内定位手机
用例场景：大型空间/建筑物（例如机场或大学校园、医院等）内的客户在线订购食物（网站？..或者是否需要 Anroid/iOS，以便我们可以提取设备数据，例如作为 UUID？）使用他自己的手机或平板电脑，将其交付到他所在的地方。
但我们怎样才能准确定位他在哪里呢？ ..我的意思不仅仅是在房间里。如果他坐在桌子旁，就能找到他……或者更确切地说找到他的设备位于哪张椅子上。
如果建筑物没有信标，要实现这一目标需要什么要求？ UUID 有用吗？如何找到该设备？我想在各处安装信标是不切实际的，例如。在座位下等
……甚至可能创建某种应用程序来引导送货员到达客户所在的位置。 ...就像汽车卫星导航一样，但位于大型建筑物内。我意识到后一部分是一个单独的问题，因此请单独回答这一点。
我期待您的建议和想法。
Use case scenario: Customer inside a large space/building (say an Airport or could a university campus, hospital, anything) has ordered food online (website? ..or would a Anroid/iOS be necessary so that we can extract device data such as a UUID?) using his own phone or tablet, to be delivered where he is.
But how can we locate exactly where he is? ..and I don't mean just in the room. If he is sitting at a table, to be able to find him....or rather find his device which chair it is at.
What would the requirements be to achieve this if the building had no beacons? Would UUIDs work? How could the device be found? I guess it would not be practical to install beacons all over the place eg. under seats, etc.
...and perhaps even create some sort of app for guiding the delivery person to where the customer is. ...just like a sat nav for cars, but within a large buidling. I realise that this latter part is a seperate question so please perhaps responding to this bit seperately.
I look forward to your suggestions and ideas.
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他们在许多机场已经有了答案——每张桌子上都有平板电脑，他们通过平板电脑订购。每个平板电脑都知道其桌号并随订单一起发送。
如果您不想在所有可能的位置提供平板电脑，那么答案就是信标。您想以非常高的精度了解设备在二维场中的位置。 Wifi位置太不确定，可能偏离100m。 GPS——如果他们启用了它，并且如果它在室内准确，并且如果机场没有出于安全原因对其进行加扰，那么它的精确度为 10m 左右，这还可以，但不足以将食物送到餐桌上。这让您需要一个短距离定位器。这基本上是信标。
UUID 没有帮助。太棒了，您现在可以唯一地识别该设备 - 它可以让您了解其所在位置的信息。为此，您需要将自己与已知点进行比较。这需要一个已知点以及一种测量距该点的距离以及距该点的方向的方法。这要求你能够通过它发出信号来检测它。这是一个灯塔。
They have an answer at many airports already- tablets on each table and they order through the tablet. Each tablet knows its table number and sends it with the order.
If you don't want to provide tablets at all the possible locations- then the answer is beacons. You want to know where a device is in a 2d field with very high accuracy. Wifi location is too uncertain, you can be off by 100m. GPS- if they enable it, and if its accurate indoors, and if the airport doesn't scramble it for security then its accurate to 10m or so, which is ok but not good enough to get food to a table. That leaves you with needing a short range location finder. Which is basically beacons.
A UUID won't help. Great, you can now uniquely identify the device- it gives you know info on where it is. To do that you need to compare yourself to a known point. That requires a known point(s) and a way of measuring how far from it you are and your direction from it. Which requires you to be able to detect it somehow by it giving off a signal. Which is a beacon.