Research on testing technology of airborne ADVB avionics system

In recent years, with the rapid development of ADVB avionics digital bus, it has gradually replaced the original airborne video transmission methods such as DVI, VGA, LVDS, and etc. It has become an important data carrier in the avionics systems of new test aircraft such as advanced fighter jets, civilian aircraft, helicopters, and trainer aircraft. The existing test methods are no longer sufficient for the new video bus. Starting from the basic protocol research,in combination with the ICD structure feature information of airborne avionics system,the self-adaptive processing of high-speed and diversified video formatsand were completed through the technical approaches such as adaptive identification, resampling, timing reconstruction,and etc., and the generalized test of multi-type machines was realized. By building an experimental platform, the acquisition and recording of the unconventional videos such as 1 680×1 050@60 fps and the high-resolution videos such as 2 560×1 024@30 fps were successfully realized, and the playback video data was complete and clear, which could verify the method effectiveness. The designed test system is compatible with the existing video test status, which can effectively reduce the cost of flight test and improve the efficiency of flight test.