Decoupling of the dynamical equations in polar coordinates is used to develop a control scheme for use in target-intercept problems with passive measurements. By defining a pseudo control variable in the radial coordinate, the radial dynamics is made independent of the transverse dynamics. After solving for the radial control, the transverse control is determined through solutions to a two-point boundary value problem. Numerical results from a six degree-of-freedom simulation which used the decoupled control indicate that it is better than the completely Cartesian coordinate control for most of the cases considered. Decoupled control, though, is obtained iteratively through a two-point boundary value problem and, hence, is more computationally intensive

Meeting Name

IEEE 1991 National Aerospace and Electronics Conference, 1991


Mechanical and Aerospace Engineering

Keywords and Phrases

Boundary-Value Problems; Control System Analysis Computing; Decoupled Control; Digital Simulation; Estimation Theory; Homing Guidance; Iterative Methods; Military Systems; Missiles; Nonlinear Control Systems; Optimal Control; Passive Measurements; Polar Coordinates; Pseudo Control Variable; Radial Coordinate; Radial Dynamics; Simulation; Six Degree-Of-Freedom Simulation; Target-Intercept; Transverse Control; Two-Point Boundary Value Problem

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 1991 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jan 1991