Originally Posted by
SASless
If one guy is saying his aircraft data is inaccurate and others are saying the system is accurate but relies upon the aircraft system being accurate.....how do we know the particular aircraft is sending accurate data?
How do you check your own aircraft to confirm it is operating correctly?
Has that been done?
Do not know for others... but when we was doing one glass cockpit + ADSB upgrade on GA fixwing.
The first thing in use was separate SDR receiver and software monitoring.
Started static on apron, later during mag sensor calibration on ground taxi and finally flying within airport circle.
On apron we find out that navigator from producer A is not feeding transponder from producer B with Alt data, position data was in in order - even much better than expected EGNOS level 7,5m on all three axis.
Therefore we was forced to provide extra serial RS232 source with Alt data.
After that we included "new" object on FR24 network.
Just remember that you need attenuator if front, because most of SDR-s are not able to receive correct data
in case of over-driven input.