Accession Number:

ADA053444

Title:

Quantitative Processing of Signal Space Data to Provide Transmission Line Analysis.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1977-12-01

Pagination or Media Count:

135.0

Abstract:

Quantitative processing of signal space data to provide transmission line analysis was developed in support of work being done at the USAF Rome Air Development Center Laboratories. The RADC engineers were working with digital modems and they were qualitatively analyzing transmission line perturbations through observation of an oscilloscope display of the signal space representation. The display was being generated by an optional circuit available with the modem, but the oscilloscope display was not capable of providing adequate quantitative perturbation information. However, the signal space data did contain all of the information required for a complete quantivative analysis of the transmission line perturbations. Therefore, a system using the same data potentially could be devised to perform the analysis. A signal space data analysis system design was developed in this thesis, which would be capable of providing three displays of the signal space representation, the amplitude and phase deviations, and the frequency spectrum of the phase deviations or phase jitter. The system would consist of the digital modem, a minicomputer, and an interface device between the modem and minicomputer which would be capable of interrupting the minicomputer. A FORTRAN program was also developed and run in a simulation effort which transformed the xy data of the signal space into a form of data which could be plotted on the three displays. Though the system was not actually constructed, it was successfully simulated such that it would merit implementation. Author

Subject Categories:

  • Cybernetics
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE