Accession Number:

AD0601332

Title:

STUDY AND INVESTIGATION OF POLARIZATION PROGRAMMING. VOLUME II - POLARIZATION SYSTEMS ANALYSIS.

Descriptive Note:

Corporate Author:

PENNSYLVANIA UNIV PHILADELPHIA MOORE SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s):

• Berkowitz,R. S.
• Choder,J.
• Mulholland,R. G.
• Hahn,P.

Report Date:

1964-04-01

Pagination or Media Count:

81.0

Abstract:

A theory of optimum reception over a dual channel system corrupted by polarized noise is presented. The theory assumes that binary data is transmitted in the form of orthogonal signals simultaneously transmitted over two orthogonally polarized channels. It is shown that if the interfering signal polarization is known exactly, its presence can result in a total degradation in signal-to-thermal-noise ratio of not more than three decibels. Also an instantaneous polarization control system is described. It is shown that for arbitrary but slowly varying interfering signal polarization it is possible to reduce significantly the effects of the interference by the successive processes of polarization measurement, adjustment of receiver polarization sensitivity, and control of transmitted signal polarization thru use of a feedback link. Effects of system adjustment accuracy and speed are evaluated. Author

Descriptors:

• *INFORMATION THEORY
• TROPOSPHERE
• PROPAGATION
• FEEDBACK
• ATTENUATION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE