Study of a VLF distributed antenna array
Abstract
This study considers the use of an array of VLF antennas distributed throughout the UK, instead of a single, high powered antenna, for submarine command broadcasts. Such an array offers survivability and environmental advantages. The coverage of the array would, however, not be omni-azimuthal, but would have nulls every few degrees as a result of the interference between the signals from the individual antennas. The study investigates the effect on the array coverage of a number of impairments (operating frequency, phase and frequency errors, and antenna loss) and discusses the advantages and disadvantages of steering the main beam to the receiving platform. Consideration is also given to how the received signal will be distorted depending on the location of the receiving platform. It was concluded that a VLF array would not be suitable for providing wide area continuous and assured communications.
- Publication:
-
In AGARD
- Pub Date:
- May 1993
- Bibcode:
- 1993rpsa.agarS....A
- Keywords:
-
- Antenna Arrays;
- Phase Error;
- Radio Communication;
- Radio Transmission;
- Radio Transmitters;
- Very Low Frequencies;
- Broadcasting;
- Losses;
- Position (Location);
- Submarines;
- Communications and Radar