Accession Number:

ADA210516

Title:

TWIRE: A Test Program for VLF Airborne Transmissions

Descriptive Note:

Interim rept. May 1987-Jan 1988

Corporate Author:

NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA

Personal Author(s):

• Pappert, R. A.
• Hitney, L. R.

Report Date:

1989-04-01

Pagination or Media Count:

105.0

Abstract:

A computer program called TWIRE, which combines a TACAMO configuration code, a radiation resistance code and a VLF propagation code, has been assembled for the purpose of conducting case studies for airborne VLF transmissions and for the purpose of pointing out possible future areas of improvement for such transmissions. A major deficiency of the program is that it is not fully automated because the configuration code requires initial inputs which often have to be determined by trial and error. Nevertheless, the program is useful for case studies and provides a tool for assessing the adequacy for field calculation purposes of point dipoles as approximations to rationally determined TACAMO antenna configurations. Sample results of such comparisons are included.

Descriptors:

• *ANTENNA CONFIGURATIONS
• *COMPUTER PROGRAMS
• *DIPOLES
• *ELECTROMAGNETIC WAVE PROPAGATION
• DEFICIENCIES
• VERY LOW FREQUENCY
• RADIATION RESISTANCE
• CASE STUDIES
• CODING
• COMPUTATIONS
• CONFIGURATIONS

Subject Categories:

• Electrical and Electronic Equipment
• Computer Programming and Software
• Radiofrequency Wave Propagation
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE