Accession Number : AD0648070

Title :   SYNERGISTIC NAVIGATION SYSTEM STUDY.

Descriptive Note : Final rept. on phase 1,

Corporate Author : IBM FEDERAL SYSTEMS DIV OWEGO NY ELECTRONICS SYSTEMS CENTER

Personal Author(s) : Klementis, Kenneth A. ; Standish, Charles J.

Report Date : 24 OCT 1966

Pagination or Media Count : 113

Abstract : Phase I of the Synergistic Navigation Systems Study is a comparison analysis of the cost/effectiveness of various optimal filtering techniques for a Doppler-inertial navigation system with position-fixing. The costs are assessed in terms of program execution time and storage requirements imposed on the navigation computer. The effectiveness is assessed in terms of improvements in navigation accuracy, erection and alignment times, etc. The study demonstrated that an optimal Kalman filter, employing velocity and position-fix information, improves navigation accuracy over the accuracy of a conventional Doppler-inertial position-fix reset technique. These memory and processing-rate requirements can be brought within the acceptable implementation limits on an airborne digital computer. Prestored approximations to the optimal filter gains should yield navigation accuracy only slightly degraded from the optimal filter accuracy, but with far fewer program storage requirements. However, the prestored gain suboptimal filter is less flexible than the optimal filter. The accuracy of the prestored gain suboptimal filter could be degraded if the actual mission differs substantially from the mission for which the gains were precomputed. (Author)

Descriptors :   *DOPPLER NAVIGATION, *INERTIAL NAVIGATION, *NAVIGATION COMPUTERS, OPTIMIZATION, DATA PROCESSING, COSTS, COMPUTER PROGRAMS, DATA STORAGE SYSTEMS, DETECTORS, ERRORS, POSITION FINDING, NOISE, ELECTROMAGNETIC WAVE FILTERS, CIRCUITS.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE