A discussion is presented of some aspects of the design problem involved in the choice of a realization or approximation of a desired system behavior (as for instance dictated by the analytical solutions to a filtering problem) by parameters that can only be approximately adjusted, e.g., due to quantization, component tolerances (analog case), and finite wordlength (discrete case). The authors first address the mathematical characterization of this robustness problem, and its solutions under various criteria of optimality. Earlier results are extended to multimode systems which can arise in nonlinear approximation problems. The feasibility of this approach in multimode filtering is shown and is illustrated by an air-to-air tracking example.
ASJC Scopus subject areas
- Electrical and Electronic Engineering