Accession Number:

ADA167685

Title:

A Cost/Performance Analysis of Hybrid Inertial/Externally Referenced Positioning/Orientation Systems

Descriptive Note:

Corporate Author:

ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA

Report Date:

1985-09-01

Pagination or Media Count:

23.0

Abstract:

Combining inertial positioning or navigation systems with externally referenced aids such as the Global Positioning System GPS or the U.S. Armys Position Location Reporting System PLRS will result in significant improvements over one of these systems acting on its own. These improvements will include lower cost, since less accurate inertial systems can be used during periods when the external reference is unavailable, better immunity to jamming than in the case on only an externally referenced system, and higher accuracy than can be obtained with only an inertial system. This paper presents the results of an analysis of the position, heading, and attitude accuracies which can be obtained using various combinations of inertial and externally referenced systems. A computer simulation was performed to incorporate extensive error models for all of the sensors involved. A 24-state Kalman filter was used to control the errors. In addition, a cost versus performance analysis is presented based on representative subsystem costs and hybridization considerations.

Subject Categories:

  • Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE