Most people use amcl, which combines odometry (which might have been fused
with IMU data) with laser scans that are matched against a laser map. The
same technique can accommodate other sensors, including wifi signal
strength. You would need a wifi map, and would need to add a wifi sensor
model to amcl (there's some older wifi code in the underlying amcl library
that could serve as a starting point).

    brian.
On Oct 6, 2010 12:30 AM, "#HONG HUAJIE#" <HONG0107@e.ntu.edu.sg> wrote:
> Hi,
>
> I have miss out some details, can localization be done using wifi signal
from router to detect the location?
>
> Could Odogyro localization be done using ROS?
>
>
> regards,
> HuaJie