Accession Number:

AD0838308

Title:

MEASUREMENT OF MAXIMUM TIME-DELAY RESOLUTION OF OBLIQUE SOUNDINGS ON EAST-WEST AND NORTH-SOUTH PATHS

Descriptive Note:

Technical rept.

Corporate Author:

STANFORD UNIV CA STANFORD ELECTRONICS LABS

Personal Author(s):

• Lynch, J. T.
• Fenwick, R. B.
• Villard, Jr, O. G.

Report Date:

1968-06-01

Pagination or Media Count:

34.0

Abstract:

The purpose of the investigation was to determine the maximum usable bandwidth of an HF, ionospheric channel, in a system which does not compensate for ionospheric distortion. A high-resolution, oblique chirp FM-CW sounder was used to measure the minimum equivalent pulse widths which could be transmitted over paths having characteristics typical, respectively, of geomagnetically east-west and north-south propagation. The path used to represent east-west propagation was from Lubbock, Texas to Stanford, California. The path used to represent north-south propagation was from Bozeman, Montana to Stanford.

Descriptors:

• *COMMUNICATION AND RADIO SYSTEMS
• *IONOSPHERIC PROPAGATION
• ATMOSPHERIC SOUNDING
• BANDWIDTH
• CALIFORNIA
• DISTORTION
• DIURNAL VARIATIONS
• HIGH FREQUENCY
• MAGNETIC FIELDS
• MONTANA
• POLARIZATION
• RADIO WAVES
• RESOLUTION
• SCATTERING
• SPECTRUM ANALYZERS
• SPECTRUM SIGNATURES
• TEXAS

Subject Categories:

• Radiofrequency Wave Propagation
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE