Accession Number : AD0824448

Title :   SYNERGISTIC NAVIGATION SYSTEM STUDY.

Descriptive Note : Phase 2 of final rept.,

Corporate Author : IBM FEDERAL SYSTEMS DIV OWEGO N Y ELECTRONICS SYSTEMS CENTER

Personal Author(s) : Johnson,Marylinda ; Klementis,Kenneth A. ; Villone,Arnold L.

Report Date : 04 SEP 1967

Pagination or Media Count : 198

Abstract : The purposes of the Synergistic Navigation System Study are: To determine the portion of theoretically available improvements which can be realized when practical implementation is considered; to assess the cost of the gains in terms of computer execution time and storage requirements; and to recommend an optimal filter design for flight test verification. Having concluded in the Phase I effort that major navigation accuracy improvements were possible through optimal data processing techniques, it was necessary in the Phase II effort to explore many areas of uncertainty. These areas include the sensitivity of the concept to unknown error magnitudes and distributions, to maneuvering flight paths, to approximations required in implementing the concept, and to implications upon data processing equipment. The major conclusion is that a significant improvement over conventional filter design is maintained under broad variation in a priori statistic. Several additional conclusions are drawn regarding system performance versus frequency of position fixes, the dependence of system performance on flight path and the relative effects on open and closed loop compensation by the filter cycle update time. A final conclusion was that closed loop compensation is preferred, and that a filter cycle update time of 30 seconds is satisfactory. (Author)

Descriptors :   (*INERTIAL NAVIGATION, DATA PROCESSING), (*DOPPLER NAVIGATION, DATA PROCESSING), (*LORAN, *DATA PROCESSING), DETECTORS, NAVIGATION COMPUTERS, OPTIMIZATION, ERRORS, MATHEMATICAL MODELS, FLIGHT PATHS, SENSITIVITY, COMPUTER PROGRAMMING, MATRICES(MATHEMATICS), MISSION PROFILES

Subject Categories : Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE