The ISRE method for analyzing system requirements with virtual prototypes

Alistair Sutcliffe and Brian Gault

Systems Engineering, 2004, vol. 7, issue 2, 123-143

Abstract: Virtual prototyping is a useful approach for refining requirements and testing designs in systems engineering; however, use of virtual reality technology can cause usability problems which can be interpreted as “false positive” requirements errors. The ISRE method guides the analysis of problems encountered during the testing of virtual prototypes and helps assign causes to either genuine design defects or usability issues with Virtual Reality (VR) technology. The method consists of techniques for walkthrough testing, testing with users, causal analysis of observed problems, and design of scenario‐based analysis sessions. A checklist of requirements questions is given, with guidance on scenario‐based testing of virtual prototypes and advice on configuring VR technology to obtain the best results from virtual prototyping sessions. The method is described and its use illustrated with a case study of validating requirements for an aircraft maintenance application. © 2004 Wiley Periodicals, Inc. Syst Eng 7: 123–143, 2004

Date: 2004
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