A Human Operator Gunner Model for a Tracking Task with Interrupted Observations in an Antiaircraft Artillery System
Abstract
This report describes the development of a mathematical model (blanking model) for a human operator's tracking performance under visual interruptions via blanking the target in a simulated manned antiaircraft artillery system. The basic ideas of the Luenberger observer theory are extended to develop an observer model with time-varying gains. The model consists of a reduced-order observer, a feedback controller, and two noise components. The blanking model is then obtained from the general model under an exponential-gain assumption. Four blanking time constants associated with the exponential gains are introduced to relate to the human operator's short-term memory. The parameters of the model are identified from a curve-fitting computer program. Model predictions of both azimuth and elevation tracking errors for several flyby and maneuvering trajectories are shown to be in excellent agreement with the empirical data obtained from the blanking experiments. It is concluded that the blanking model developed in this report is a predictive model for a gunner's tracking performance with interrupted observations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1981
- Accession Number
- ADA097360
Entities
People
- Chen-fu Yu