Ublox neo7m GPS quad moving on mission planner

Hi there, I am using a Crius AIOP v2 flight controller with apm megapirateng 3.0.1 r4 code. After loading the gps configuration file(from AP_GPS/config) to the ublox neo7m I opened the mission planner. Gps was locked and laying on my table. However quad logo was moving randomly all the time on mission planner screen(map). What could be wrong? I appreciate for any help.

@oggy_55,
What was the number of satellites and the HDOP value when the Quad Icon was moving around on the map?
Regards,
TCIII AVD

I have no idea about those values how can I check them

I see them. after gps fix hdop changes between 2.4 and 3.6 and shows 5-6 satellites.

I added a photo.

@oggy_55,
There are several reasons why your ArduCopter Avatar was moving around:

  1. You were indoors which makes it hard for the GPS to receive at least 8 - 10 satellites for a good 3D lock
  2. Your satellite count was only between 5 - 6 satellites.
  3. You need an HDOP of 2.0 or less for a decent 3D position lock and you had between 2.4 - 3.6.
    You need to take the GPS outside and let it sit for a while under a clear sky.
    Regards,
    TCIII AVD

thank you very much