I have a problem ipad mini5 while using air navigation pro software, gps signal is very poor?

If your problem is restricted to a single App, then you might constructively contact the App developer for assistance with the specific software that is causing issues.

If, however, the problem affects all Air Navigation software, when used in the cockpit, two possibilities exist:

1) Physical positioning of the device is blocking GPS signals. Remember, GPS requires a clear “line of sight” view of the sky. You shouldn’t rely upon reflected GPS signals - as these are unreliable and can significantly reduce accuracy of the computed position solution (i.e., Dilution of Precision, DOP, is degraded).

2) Something in the environment is creating an interfering signal. Even if not on the same frequency, interfering signals can swamp the very low-level signals received by your device. The cockpit and immediate environment is filled with avionics and other radio devices.

I hope you find this is helpful is diagnosing potential sources of issues.

Is your iPad Wifi only? Have you checked with the developer?

Here are part of the requirements of that app:

REQUIREMENTS

iPads “WiFi only” don’t include an internal GPS receptor, an external sensor is needed for these devices.

Check out our Online User Manual at http://manual.airnavigation.aero