doppler

Dear Colleagues, I have a question related to the navigation system of the Fiat G.91T/3s and R/3s in the Luftwaffe setup. Reportedly, these birds used the Mark III B PHI plus the DRA-12A Doppler navigation (in addition to the analog Lear ADF-102 ADF), while Luftwaffe is also known to have used...

Can our experts explain please if the AN/ASN-128 Doppler navigation system of the late 1970s and the 1980s, which was predominantly used on-board military helicopters like the AH-1F, AH-64A, and UH-60A, was easy to use in terms of inputting the data and navigating to the waypoints, and did it...