What is measured in order to establish aircraft position in relation to the localiser beam on an ILS?

Question

Question ATPL - Airline Transport Pilot license - Radio Navigation

QuizVDS · Accepted Answer

The difference in depth between the 90 Hz modulation and the 150 Hz modulation.

QuizVDS · Answer

The bearing to the localiser antenna found by means of a loop antenna.

QuizVDS · Answer

The difference in phase between the 90 Hz modulation and the 150 Hz modulation.

QuizVDS · Answer

The difference in time between the 90 Hz modulation and the 150 Hz modulation.

Id 58 - ATPL - What is measured in order to establish aircraft position in relation to the localiser beam on an ILS?