Doppler filtration in HF direction finding
Abstract
A method for measuring the angles of arrival of a HF radio-signal is described, based on Doppler mode separation. An algorithm for phase direction finding with Doppler filtration is given, and it is noted that the accuracy of the angle measurement is increased when Doppler mode separation is used. Experiments were carried out on measuring angles of arrival in the vertical and horizontal planes on 1200- and 3000-km paths. Phase direction finding systems with Doppler filtration, when combined with processors and displays, can compete with large multiantenna systems, solving special research tasks, particularly under field conditions.
- Publication:
-
Radiotekhnika i Elektronika
- Pub Date:
- July 1979
- Bibcode:
- 1979RaEl...24.1444A
- Keywords:
-
- Doppler Effect;
- High Frequencies;
- Radio Direction Finders;
- Radio Filters;
- Angles (Geometry);
- Filtration;
- Communications and Radar