The Research And Design Of Transfer Alignment Simulation And Verification System On Ship Carried Weapon Inertial Navigation System

Traditional marine transfer alignment proposal was simulated and verified on the basis ofthe ideal motion state, which can’t present the actual alignment effect. Because of the varietyof transfer alignment proposals, simulation system requires the transfer alignment module caneasy be replaced and ameliorated. Therefore, the research of strapdown inertial navigationsystem (SDINS) base on ship motion space and the design of simulation and verificationsystem play an important role in the promotion of transfer alignment simulation technologyand performance.Building4degree of freedom ship space motion base on the Newton rigid bodymomentum theorem and moment of momentum theorem, computer simulation verifies theship space motion model is feasible. Via a series of coordinate transform and the relationshipof velocity, acceleration, angular rate between SDINS and the center of mass, establish themaster INS and slave INS base on ship space motion. Computer simulation verifies thetransform the ship space motion information into INS is exact. It affords a good simulationcircumstance for SDINS transfer alignment of the ship carried weapon. Derive Kalman filterstatus equation and measurement equation of velocity plus attitude match transfer alignmentbase on moving base SDINS error equation, and compensate the influence of lever arm andflexure distortion, which provide a proposal for verifying the simulation and verificationsystem.The simulation and verification system is implemented on Windows platforms, and usedMFC program technique. This article from the perspective of users, analyzes deeply therequirement of each module, design the general framework of the simulation and verificationsystem, and then develop the function of each module. The simulation and verification systemfinish the calculation of4degree of freedom ship space motion, the input informationcalculation of accelerometer and gyroscope and navigation of master INS, which provide thetransfer alignment module for input and reference information. Users only need to design thetransfer alignment proposal, and can finish the simulation and verification of proposal in theplatform. The design of the simulation and verification system plays an important role inshortening the periods of software development and reducing repetitional development. Thisarticle develops convenient, briefness, easy to manipulate human–computer interactionsystem, which can allow users to be familiar with the operation and function of the platformfast. The application of object-oriented programming technique makes the system tend to modularization, reduces the coupling of system; the application of multi-thread techniquemakes system can finish the function of each module fast and real-time; the application ofdynamic linked library (DLL) makes users can switch the transfer alignment proposal easilyand conveniently, which don’t have a bad influence on the platform and improve thereusability, maintainability, scalability of the simulation and verification system.