Research And Design Of The Configuration Simulation Platform For Strapdown Inertial Navigation System

Strapdown inertial navigation system(SINS)has become the main content of the research in the field of inertial navigation system(INS)which has smaller size,lower cost and higher precision.The development of the simulation technology reduces the cost of SINS,shortens the development period,and allows the SINS to develop more rapidly.At present,SINS with ships as its application object is mostly emulated and verified through emulators.However,the emulator contains the algorithm procedure internally which can only carry out simulation analysis for a particular algorithm model and makes it difficult to verify the following improved optimization algorithm,leading to the simulator soon expired.Based on the disadvantages of the simulator,this paper designs a configuration simulation and verification platform for SINS.Simulation analysis of the SINS can be carried out through externally loading the algorithm model.Firstly,the functions and requirements of the configuration simulation platform for SINS are discussed and summarized.Based on this,an overall scheme of the SINS configuration simulation platform is designed from three aspects of the overall framework of the platform,the operation mode and the switching conditions of mathematical models.The simulation verification platform does not include the algorithm model,so the performance accuracy of the system can be verified through loading the external algorithm model.Therefore,the interface specification for the configuration simulation platform is designed so that all the algorithm models conforming to the interface specification of this paper can be operated on the proposed platform.Secondly,according to the overall scheme of the SINS configuration simulation platform,the technologies and methods involved are analyzed and studied.The SINS configuration simulation platform is divided into control module,the subsystem model module and navigation information display module.The first control module includes the research of the button,the mouse,keyboard and the analogue input.The second subsystem model module mainly researches the model loading mode and model operating mode,and the third navigation information display module mainly studies the display methods of texts,instruments and curves.Since there is no available instrument control for ship attitude information display,this paper aims at the exploit of the virtual instrument control by using OpenGL graphics library and MFC technology.Finally,through the design of the SINS configuration simulation platform scheme and technical research,the simulation platform and subsystem model are implemented and detailed operation process is elaborated.In order to certify that the SINS configuration simulation platform can operate as expected and produce the results,the simulation scheme is verified through different instances.At the same time,in order to verify the accuracy and reliability of the simulation platform,the running data on the simulation platform is compared with the original program data running under the same conditions.