Accession Number:

AD0838819

Title:

THE EFFECTS OF IRREGULARITY SCALE ON USABLE ANTENNA APERTURE

Descriptive Note:

Technical rept.

Corporate Author:

STANFORD UNIV CA STANFORD ELECTRONICS LABS

Personal Author(s):

• Manning, L. A.

Report Date:

1968-07-01

Pagination or Media Count:

53.0

Abstract:

It is assumed that a wave is incident on a broadside antenna array after passing through a propagation medium containing refractive-index fluctuations having a Gaussian correlation function. The influence of the irregularities on usable array directivity and effective power gain is explored as a function of the magnitude and scale of the refractive-index fluctuations, and of the extent and position of the scattering region. The domains of Fresnel diffraction geometrical optics and Fraunhofer diffraction wave theory are distinguished, and within these domains the nature of the array performance is categorized and explored for relative parameter classes.

Descriptors:

• *ANTENNA APERTURES
• *IONOSPHERIC PROPAGATION
• *RADAR SIGNALS
• ANTENNA ARRAYS
• ATMOSPHERIC REFRACTION
• DIRECTION FINDING
• GAIN
• IONOSPHERE
• REFRACTIVE INDEX
• SCATTERING

Subject Categories:

• Electrical and Electronic Equipment
• Active and Passive Radar Detection and Equipment
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE