Accession Number:

AD0755257

Title:

Tropical Propagation Research

Descriptive Note:

Final rept. (Volume 4)

Corporate Author:

ATLANTIC RESEARCH CORP ALEXANDRIA VA JANSKY AND BAILEY ENGINEERING DEPT

Personal Author(s):

• Hicks, John J.
• Robertson, Richard G.
• Sykes, Charles B.
• Anti, Per A.

Report Date:

1972-12-01

Pagination or Media Count:

130.0

Abstract:

The report presents results from a special series of measurements designed to characterize the influence of a jungle environment on the transmission of digital signals. Measurements were conducted by transmitting a swept frequency signal, 4 MHz wide about the center frequencies of 50, 100 and 150 MHz, and photographically recording the received envelope and phase, compared to a fixed reference antenna at the receiving terminal. The test antenna was incrementally moved along both a radial and transverse direction with respect to the line of transmission from the transmitter.

Descriptors:

• *RADIO TRANSMISSION
• POLARIZATION
• STATISTICAL DATA
• ATTENUATION
• VERY HIGH FREQUENCY
• THAILAND
• SOUTHEAST ASIA
• JUNGLES
• TROPICAL REGIONS

Subject Categories:

• Radiofrequency Wave Propagation
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE