Abstract: For the problems of great technical difficulty and multi line parallel overlapping of phases in satellite development, a virtual test technology is proposed in this paper. Based on virtual test platform, the onboard software is embedded in the virtual target and runs on a PC together with the dynamic simulation software, parts simulation software and automatic test software. The technology realizes the simulation of real underlying environment, software function and external interfaces. The virtual test can be used in all stages of satellite development, and has multiple modes such as pure software and semi physical, which can not only run with virtual equipment, but also support access to real equipment. Compared with traditional pure hardware tests, virtual test can greatly advance the test time, enrich the test means, reduce test cycles, improve efficiency of development and have lower cost of development, which also has high engineering value.

Key words: virtual test, satellite, attitude and orbit control, housekeeping