A Position-fixing Method for a Flight Experiment Aircraft Using ρ-θ Radio Navigation Signals

Abstract

One of the most important things in carrying out a flight experiment on navigation is to determine the aircraft position accurately and keep her track continuously.

This report describes needs of aircraft positioning methods in the first part and then presents technical data obtained by use of TACAN signals, both on the ground and in the air.

In the first section, a thought was given to the fact of received signals composed of rapidly and slowly fluctuating radiated signals, and a method to discriminate these two.

In the following section, an antenna design is described with data obtained on the ground.

Then, an aircraft positioning method using the antenna and TACAN signals is stated.

A radio navigation overall performance is governed by its signal qualities in the air between aircraft and the ground station.

And the data obtained thusfar clearly show this fact.

However, we could not prove this theoretically yet.