Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (7): 2237-2245.doi: 10.12305/j.issn.1001-506X.2025.07.17

• Systems Engineering • Previous Articles    

MS-GERT model for effectiveness evaluation of multi-stage offensive and defensive adversarial system-of-systems

Jingru ZHANG1,*, Zhigeng FANG1, Yunke SUN2, Shuang WU1, Ding CHEN3   

  1. 1. College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    2. Nanjing Institute of Electronic Equipment, Nanjing 210001, China
    3. Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China
  • Received:2023-11-13 Online:2025-07-16 Published:2025-07-22
  • Contact: Jingru ZHANG

Abstract:

Effectiveness is an important indicator for measuring the performance of multi-stage offensive and defensive adversarial system-of-systems (SoS), which represents the tasks completion degree. During the execution of tasks, the external environment constantly changes, and the effectiveness of the SoS shows time dependent relationship. To address this issue, an expanded graphical evaluation and review technique (GERT) is proposed to evaluate the effectiveness of multi-stage offensive and defensive adversarial SoS. Firstly, a GERT network is constructed based on the multi-stage characteristics of SoS task execution, and the transmission characteristics of the network are analyzed. Then, in the calculation of effectiveness results, a new task time effectiveness parameter considering time factor is designed to reflect the time-dependent characteristics of effectiveness, using the c and z tag method to obtain the relevant parameters for critical tasks execution by the critical component system. Finally, taking the a missile defense SoS' defensive combat mission as an example, the execution effect of the defense combat mission is evaluated, and indicator data such as SoS effectiveness, combat time, missile inventory, and the time of the missile's first hit on the target are obtained, which provides decision-making indicators that cover more information for optimizing the SoS configuration scheme.

Key words: offensive and defensive adversarial system-of-systems (SoS), effectiveness, graphical evaluation and review technique (GERT), task time effectiveness

CLC Number: 

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