I. Introduction
Avionics system is a general term for all electronic equipment required to support aircraft in completing various flight tasks, and carries functions including communication, navigation, flight management, and flight status monitoring [1]. From the late last century to modern times, the continuous improvement of electronic technology and the rapid development of computer performance have promoted the update of avionics systems, gradually forming advanced Integrated Modular Avionics (IMA) systems with low cost, high flexibility and high scalability.