如何从无线路由器捕获原始信号？ [英] How to capture raw signal from wireless router?

问题描述

我现在看到了几个项目，这些项目从典型的无线路由器收集的无线电数据中获得新颖的空间信息：

I have seen several projects now which derive novel spatial information from radio data collected from a typical wireless router:

http://wisee.cs.washington.edu/

http://www.extremetech.com/extreme/133936-using-wifi-to-see-through-walls

使用无线路由器作为一种无源雷达的想法很棒。

The idea of using a wireless router as a sort of passive radar is fantastic.

我非常感兴趣在我自己尝试从无线路由器收集的数据时，但是关于如何与无线路由器进行实际接口并获得设备收集的原始信息流的信息很少。之前在这里也曾提出过类似的问题，但我尚未看到令人满意的答案。

I am very interested in experimenting with data collected from a wireless router myself, but there is little information on how to go about actually interfacing with a wireless router and getting a raw stream of information collected by the device. Similar questions have been asked on here before, but I am yet to see a satisfactory answer.

我没有必要的代表点来链接其他问题，但参见：

I don't have the rep points necessary to link to the other questions but see:

从无线网卡中捕获原始信号，就像您将获得声卡一样

'Capture Raw Signal from WiFi card as You Would a Sound Card'

原始wifi信号数据的访问

'raw wifi "signal data" access'

我正在寻找一种解决方案，可以让我使用低成本的设备，例如非常常见的WRT54G无线路由器。如果您的答案涉及自定义无线电硬件，则无需费心发布。

I am looking for a solution that would let me use a low-cost device such as the oh so common WRT54G wireless router. If your answer involves custom radio hardware, you needn't bother posting.

推荐答案

据我所知，唯一使用一种商品硬件是使用Intel 5300 Wifi卡。您可以从子载波（OFDM）样本中的三个天线上获得复杂的CSI（其中的幅度和相位信息）。您可以看一下这个站点：

As far as I know, the only option using a commodity hardware is to use Intel 5300 Wifi card. You can get the complex CSI (amplitude and phase info therein) from the three antenna on it from a sample of subcarriers (OFDM). You can take a look at this site:

http://dhalperi.github.io/linux-80211n-csitool/

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