问题
Many scientists have published papers documenting how devices connected via WLAN can be tracked by measuring its Signal Strength, Time Of Arrival, Round Trip Time, etc. Any idea how I can access these values in Windows using any .NET API?
Or do you know of software SDKs already available for location tracking?
回答1:
hello for WIndows 7 this is a good code wich can detect all AP with MAC adress RSSI SSID :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using NativeWifi;
class Program
{
static void Main(string[] args)
{
WlanClient client = new WlanClient();
// Wlan = new WlanClient();
try
{
foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
{
Wlan.WlanBssEntry[] wlanBssEntries = wlanIface.GetNetworkBssList();
foreach (Wlan.WlanBssEntry network in wlanBssEntries)
{
int rss = network.rssi;
// MessageBox.Show(rss.ToString());
byte[] macAddr = network.dot11Bssid;
string tMac = "";
for (int i = 0; i < macAddr.Length; i++)
{
tMac += macAddr[i].ToString("x2").PadLeft(2, '0').ToUpper();
}
Console.WriteLine("Found network with SSID {0}.", System.Text.ASCIIEncoding.ASCII.GetString(network.dot11Ssid.SSID).ToString());
Console.WriteLine("Signal: {0}%.", network.linkQuality);
Console.WriteLine("BSS Type: {0}.", network.dot11BssType);
Console.WriteLine("MAC: {0}.", tMac);
Console.WriteLine("RSSID:{0}", rss.ToString());
}
Console.ReadLine();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}
i hope it will be helpful enjoy
回答2:
The Managed Wifi API will provide signal strength information. Here's a code snippet adapted from a question I previously posed and was answered here:
static void Main(string[] args)
{
WlanClient client = new WlanClient();
foreach ( WlanClient.WlanInterface wlanIface in client.Interfaces )
{
Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList( 0 );
foreach ( Wlan.WlanAvailableNetwork network in networks )
{
Console.WriteLine( "Found network with SSID {0} and Siqnal Quality {1}.", GetStringForSSID(network.dot11Ssid), network.wlanSignalQuality);
}
}
}
static string GetStringForSSID(Wlan.Dot11Ssid ssid)
{
return Encoding.ASCII.GetString(ssid.SSID, 0, (int) ssid.SSIDLength);
}
回答3:
Windows itself provides a Location API now.
来源:https://stackoverflow.com/questions/1686715/c-sharp-how-do-i-access-the-wlan-signal-strength-and-others