Research On The Application Of Digital Interface Technology Of Airborne Inertial Navigation System

With the development of aviation industry, the ARINC429 bus and the MIL-STD-1553B bus are widely applied to the field of aviation and aerospace at present. The airborne inertial navigation system is the part which may not be lacked in the aviation electronics.This paper first unifies the strapdown navigation system and the integrated navigation system, and carries on the introduction to development of the ARINC429 bus and the 1553B bus, based above, completes the following research on the two kinds of bus.Under the background of the strapdown integrated navigation system(SINS), designs some SINS with ARINC 429 interface, analyzes the communication protocol, and in the guarantee of the system precision and the real-time request, accomplishes the modularized software of the ARINC429 interface subsystem, and gives long time debugging and testing results to the SINS system.This paper designs the airborne integrated navigation system based on the 1553B bus, completes the bus information flow design, and carries on thorough analysis on the communication protocol of the 1553B bus. Taking VC6.0 and MSC6.0 as the main development kits, this paper completes the modularized software of the three parts of the bus control, the remote terminal, and the monitor terminal, realizes the visible system software.Finally, this paper carries on the debugging and testing to the system, analyzes the 1553B bus and the integrated navigation system performance.The result indicates that this paper has the practice significance of regarding the application research of ARINC429 and the MIL-STD-1553B interface in airborne inertial navigation system, which provides a good reference for the engineering projects.