Constant gain tracker with variable frame time

Author

Gardner, L.A., Jr. ; Mullen, R.J.

Author_Institution

Unisys, Waltham, MA, USA

Volume

24

Issue

4

fYear

1988

fDate

7/1/1988 12:00:00 AM

Firstpage

322

Lastpage

336

Abstract

A three-parameter constant-gain recursive filter is augmented by a residual-dependent frame time algorithm that automatically increases sampling rates when a target maneuvers. Computer simulations show that tracking performance is essentially independent of the particular target trajectory. It is found that radial distance errors remain effectively constant over different trajectories. It is the number of observations dictated by the adaptive frame time algorithm that is trajectory-dependent. The filter equations along with the frame time adjustment algorithm are first described, and a comparison made with a similar procedure. Examples given use the nonlinear observations generated by a passive sensor system.<>

Keywords

adaptive systems; computerised signal processing; digital simulation; filtering and prediction theory; tracking systems; adaptive frame time algorithm; computer simulation; constant gain tracker; filter equations; nonlinear observations; passive sensor; radial distance errors; residual-dependent frame time algorithm; three-parameter constant-gain recursive filter; variable frame time; Algorithm design and analysis; Computer simulation; Filters; Gain measurement; Nonlinear equations; Sampling methods; Sensor systems; Target tracking; Time measurement; Trajectory;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.7173

Filename

7173