Nonlinear Prediction Concept for Improving Gun Accuracy.
Abstract
The purpose of a gun fire control system is to offset the gun from the target line-of-sight such that a projectile will impact the target at a time of flight later. This report investigates a prediction concept for improving gun-to-target offsets against maneuvering targets. The accuracy of a predictor is measured by its ability to predict the position of a target at a time of flight later. Prediction of future position is a function of present motion of the target and time of flight of the projectile. The performance of the predictor depends on how accurately the assumed target states characterize the actual motion. For maneuvering targets, the existence of target acceleration and/or higher derivatives of the motion degrades the performance of a linear predictor thus creating the requirement for nonlinear prediction. Analyses are presented for classical first- and second-order predictors, and for a curvilinear prediction concept. The rationale and preliminary results are presented which indicate that the curvilinear concept has more potential than a classical second-order predictor for improving the performance of gun fire control systems against maneuvering targets.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1991
- Accession Number
- ADA235542
Entities
People
- Toney R. Perkins
Organizations
- Ballistic Research Laboratory