FlightPathOBN:
You're talking about a modern interpretation by a particular manufacturer of the AHRS, which has expanded to cover all those things.
I guess each aircraft manufacturer has gone down their own path as to what a modern AHRS is and does, and perhaps the acronym AHRS should be retired now that pretty much all flight data has been merged together and IRS seems more appropriate?
Although I guess IRS can also mean Inertial Ref System, so perhaps that's not a good one to use either!
Uplinker:
Not sure what you're getting at?