Abstract
Software faults are the causes for repeating catastrophes in modern space missions. There are various problems in lifecycle of flight control software including lack of adequate models of real-time control algorithms. Real-time control algorithms have the totally distinct nature in contrast to computational algorithms. The paper presents mathematical models suitable for analysis, design and formal verification phases of lifecycle of spacecraft’s flight control software. Two kinds of models - graph-based and algebraic, are being described. These models were successfully introduced in computer aided software engineering toolset for design and verification of spacecraft’s real-time onboard control software.
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