Are there modern positioning systems that can automatically join all those data sources into one position? Traditionally navaids are treated as completely separate sources and are shown on different kind of instruments. But they could also be used as a replacement source for GNSS data on a modern map screen.
Depending on their kind they might not return a specific position, but in combination with other sources they often do via triangulation.
PS: INS (Inertial Navigation) also still exits. It often works for quite a long time really precisely. Also precision can be calculated. So it can start as a dot on a map which becomes a bigger circle as the precision decreases. It could be automatically recalibrated whenever high confidence positioning is available.
Depending on their kind they might not return a specific position, but in combination with other sources they often do via triangulation.
PS: INS (Inertial Navigation) also still exits. It often works for quite a long time really precisely. Also precision can be calculated. So it can start as a dot on a map which becomes a bigger circle as the precision decreases. It could be automatically recalibrated whenever high confidence positioning is available.