Accession Number:

ADA229505

Title:

SYNC2 Program Assessment Report

Descriptive Note:

Final technical rept. Mar-Jul 1990,

Corporate Author:

SYNETICS CORP WAKEFIELD MA

Report Date:

1990-07-12

Pagination or Media Count:

51.0

Abstract:

This report provides a technical assessment of the SYNC2 program currently used in the Omega system synchronization process. The utility of Omega depends upon the predictability of the phase and phase difference contours near the earths surface. To achieve this predictability, a close synchronization of signals from all Omega transmitters is necessary. The SYNC2 program was developed in the mid-1970s to improve this synchronization process, and replaced an earlier synchronization program. From a performance viewpoint, the SYNC2 program has served its original purpose. Technological developments and improvements in estimation techniques, however, have rendered the program and accompanying documentation unsuitable as a baseline for further development or even continued use with new Global Positioning System GPS operating environment. Many of the shortcomings with SYNC2 may be directly related to historical factors. SYNC2 was developed prior to the widespread acceptance of structured programming methods. Because of this, the SYNC2 software is extremely difficult to troubleshoot and to upgrade. The report examines three major aspects of the SYNC2 program Functional Design, Software Implementation, and Software Documentation. kr

Subject Categories:

  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE