About GPS strange thing

Hi all my GPS display on the data log show that i have 9 sat and my HDOP is around 0.84 to 0.92 . Is this value bad to fly waypoint? As with this value my gps did not follow the correct path and most of the time flying very aggressively . Anyone know what is the possible problem causing the HDOP to drop below 1?

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  • HDOP drops below 1 if you get a truly excellent fix -- like with 9 satellites! -- at least on Venus and uBlox modules I've used.

    So whatever is causing the flight problems isn't the quality of the GPS fix.

  • low HDOP is good, lower means better.

    Your GPS accuracy is excellent! below 2 is the target to fly.
    May I ask which module you are using?

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