Get the GPS accuracy via mavlink

[hosein_gh (Hosein Ghanbari)]

And its will be helpful

Read GPS and IMU data form PixHawk to raspberry pi

Hello, I am trying to communicate to pixhawk via raspberry pi 2 over MAVLink. I can send commands but i can not read the real time sensor data from the pixhawk. Is it possible to do that?? Because I want the NED position co-ordinates provided by the IMU and GPS. Can anyone help me in this?