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If the signal is jammed, it would be obvious and we would not use GPS ( we can deselect it ) for any approaches requiring its use. We would fly an ILS or old school VOR/DME approach ( or do a visual approach ). We would receive an alert …” GPS Primary lost”.Hi.
Thank you for helping me out.
'GPS signal spoofed: old school comparing raw data position ( land based radio signals….VOR/DME ) versus computed position ( GPS )'.
Is this something you would be looking at as a matter of course or only if jamming or spoofing was suspected?
If the signal was spoofed, we might would receive an alert in the cockpit warning us that there is a significant difference in estimated position ( IRS versus GPS ) and an alert would be triggered ….” FM/GPS POS DISAGREE”. We would verify ( raw data ) and deselect the two GPS receivers and navigate using IRS.
Since Airbus has limited info in the manual, I hunted around for more information and this is what Honeywell says ( manufacturer of our FMS ) about spoofing.
I learned stuff myself today due to conflicting , and limited , information by Airbus ( spoofing, not jamming ).
https://aerospace.honeywell.com/us/...s-spoofing-honeywell-sets-the-record-straight
https://aerospace.honeywell.com/us/en/about-us/blogs/spoofing-and-jamming
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