Accession Number : ADA318776

Title :   Incorporation of Non-Destructive Centrifuge Tests into Missile Guidance Assessment,

Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s) : Payne, Dean A. ; Feltquate, Harvey

PDF Url : ADA318776

Report Date : 1996

Pagination or Media Count : 26

Abstract : As an adjunct to the Navy's surveillance program for guidance assessment, the FBM Guidance Branch is considering a test program in which operational Trident II guidance system fleet assets would be flown on a centrifuge. This paper outlines an approach to the analysis of the guidance data. A test for tactical representativeness is described, as well as an approach to the optimal combination of centrifuge data with test flight data, provided that the test for tactical representativeness is passed. The approach relies on a mathematical error model structure that relates fundamental level errors (accelerometer and gyro biases, etc.) to instrumented measurements of position and/or velocity along the guidance system 5 tragectory. With multiple tests this structure allows maximum likelihood estimation techniques to be applied to estimate the mean and variance of the fundamental guidance errors. The inverse of the Fisher information matrix associated with the estimate defines the uncertainty in the estimate and allows a quantitative test of the centrifuge-based estimate against a similar flight-based estimate. If the test is passed, the information-weighted average of the two estimates yields the optimal estimate.

Descriptors :   *GUIDED MISSILE LAUNCHERS, *UNDERWATER TO SURFACE MISSILES, TEST AND EVALUATION, MATHEMATICAL MODELS, GUIDED MISSILES, FLIGHT TESTING, MEASUREMENT, POSITION(LOCATION), UNCERTAINTY, EXPERIMENTAL DATA, OPTIMIZATION, NONDESTRUCTIVE TESTING, MODELS, ACCELEROMETERS, MAXIMUM LIKELIHOOD ESTIMATION, TEST METHODS, CENTRIFUGES, ESTIMATES, ERRORS, YIELD, INSTRUMENTATION, GUIDANCE.

Subject Categories : Underwater-launched Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE