I. Introduction
As one of the important ways to process flight test data, onboard real-time data processing and analysis plays an important role in flight tests. This technology plays a very important role in improving data processing efficiency, shortening flight test cycles, accelerating the delivery of aviation products, and promoting the development of aviation technology [1–2]. Developed aviation countries in Europe and the United States use advanced onboard real-time data analysis systems to process and analyze data in real time during model test flights. After the flight, they can obtain the analysis and evaluation results of the flight actions, and are in a leading position in the field of real-time data processing and analysis [3].