A Multiple IMM Estimation Approach with Unbiased Mixing for Thrusting Projectiles

Author

Yuan, Ting ; Bar-shalom, Yaakov ; Willett, Peter ; Mozeson, E. ; Pollak, S. ; Hardiman, David

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Connecticut, Storrs, CT, USA

Volume

48

Issue

4

fYear

2012

fDate

10/1/2012 12:00:00 AM

Firstpage

3250

Lastpage

3267

Abstract

We present a procedure to estimate the state of thrusting/ballistic endoatmospheric projectiles for the end purpose of impact point prediction. The short observation time and the estimation ambiguity between drag and thrust in the dynamic model motivate the development of a multiple interacting multiple model (MIMM) estimator with various drag coefficient initializations. A simple unbiased IMM mixing procedure (useful for quite general applications) is presented for state estimators with unequal dimensions and applied for the thrusting and ballistic modes in the case considered. Results with real data are given.

Keywords

aerospace industry; ballistics; drag; estimation theory; impact (mechanical); projectiles; MIMM estimator; ballistic endoatmospheric projectile; drag coefficient initialization; dynamic model; estimation ambiguity; impact point prediction; multiple IMM estimation; multiple interacting multiple model; state estimator; thrusting projectile; unbiased IMM mixing procedure; Covariance matrix; Drag; Estimation; Noise; Projectiles; Trajectory; Vectors;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2012.6324701

Filename

6324701