"When designing feedback control systems, there is often a need for estimation methods that provide system information that is not readily available via sensors placed within the system. In many cases a sensor that measures a particular system state either does not exist or is prohibitively expensive. In addition, all realistic systems contain some degree of nonlinearity. This thesis focuses on two such cases: missile guidance with bearings-only measurements and GPS satellite orbit determination. In each case, a new nonlinear filter, the [theta]-D method, is used and evaluated for its performance in providing the necessary estimation. To aid the filter in the bearings-only application, a guidance law is formulated that assists the filter in estimating the target location despite the lack of range measurement. An implementation procedure, called the Staggered Filter Concept, is also presented for implementing a continuous filter, such as the [theta]-D filter, with measurements taken at discrete intervals. This procedure is used to implement the orbit determination algorithm on the Missouri S&T Satellite Team M-SAT mission"--Abstract, page iii.
Balakrishnan, S. N.
Sarangapani, Jagannathan, 1965-
Mechanical and Aerospace Engineering
M.S. in Aerospace Engineering
United States. Missile Defense Agency
Missouri University of Science and Technology
x, 78 pages
© 2010 Michael William Dancer, All rights reserved.
Thesis - Open Access
Feedback control systems -- Design and construction
Guided missiles -- Control systems
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Dancer, Michael W., "Analysis of the theta-D filter as applied to hit-to-kill interceptors and satellite orbit determination" (2010). Masters Theses. 6729.