/// <summary>
/// 利用RSSI得到设备距AP的水平距离
/// </summary>
/// <param name="ap_info">参与运算的AP实例</param>
/// <returns>单位：m</returns>
private static double GetDisFromRSSI(APInfo ap_info)
{
double rawDis = 0.0;
double power = (ap_info.A - ap_info.rssi) / (10 * ap_info.n);
rawDis = Math.Pow(10, power);
//返回AP到UE的水平距离
return(Math.Sqrt(Math.Pow(rawDis, 2) - Math.Pow(ap_info.height, 2)));
}
internal AccessPoint(APInfo apInfo)
{
_ssid = apInfo._ssid;
_mac = apInfo._mac;
_rssi = apInfo._rssi;
_wepStatus = apInfo._wepStatus;
_networkInfrastructure = apInfo._networkInfrastructure;
_networkType = apInfo._networkType;
BeaconPeriod = apInfo.BeaconPeriod;
DSConfig = apInfo.DSConfig;
_rates = apInfo._rates;
}
/// <summary>
/// 根据AP的ID在数据库中查找配置信息
/// </summary>
/// <param name="ap_id"></param>
/// <returns>返回AP的配置信息</returns>
private static APInfo GetAPInfo(string ap_uuid)
{
ILog log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
CAPInfoProvider apPro = new CAPInfoProvider();
AP_Info_table entity = apPro.GetEntityByUUID(ap_uuid);
APInfo apInfo = new APInfo();
try
{
apInfo.location = new CPoint(entity.x.Value, entity.y.Value);
apInfo.A = entity.A.Value;
apInfo.n = entity.n.Value;
apInfo.height = entity.height.Value;
}
catch (Exception ex)
{
log.Error(string.Format("get AP entity from {0} error! please check AP UUID!", ap_uuid));
}
return(apInfo);
}
