Research And Design Of Performance Verification Platform For Marine Navigation Algorithm In Ethernet Topology Mode

With the upgrade of new navigation sensors,the innovation of ship navigation algorithm,the improvement of computation and real-time requirements,and the extension of navigation range,the performance verification of navigation algorithm becomes more and more important.Although the actual physical equipment test can give the performance verification results of navigation algorithm intuitively,it is limited by objective factors such as region and physical time,which results in high test cost and low test efficiency.Therefore,building a platform to verify the performance of navigation algorithm in full latitude is the best way to develop navigation system.The existing marine navigation algorithm performance verification platform has poor restoring ability of real navigation route and can not verify full-latitude navigation algorithm.When validating navigation algorithm across large latitudes and long voyages,the platform under single-machine mode has limited operation and storage capacity,which results in the platform unable to continue high-intensity operation,aggravated instability factors,and poor visualization effect,and upgrade control and navigation algorithm over large latitudes and long voyages.The difficulty of updating modules.Based on the above problems,this paper studies and designs a performance verification platform for marine navigation algorithm under Ethernet mode to improve the maintainability of the platform and enhance the use cycle and engineering practicability.In view of the existing platform,the carrier motion model is fixed and single,it can not be close to the real navigation route,and the intuition is poor,and it has the problem that it can not verify the full latitude navigation algorithm.Combining with chart elements,the algorithm of ship track location and course planning based on chart is studied,and the sensor data generation algorithm in middle and low latitudes and polar regions is designed.The real-time display of ship position on chart can finally achieve the purpose of simulating more realistic navigation trajectory to verify the full latitude navigation algorithm.The performance verification platform of marine navigation algorithm in single-machine mode is faced with heavy computational storage task,long-time and high-intensity operation of computer,aggravation of instability factors,and the observation and verification results need to switch interfaces,which is inconvenient to operate.Designing the Ethernet topology mode to establish the server and client,realizing the stable communication between the system based on TCP/IP protocol,and allocating the whole verification work reasonably can improve the computing,running and storage capacity.To a certain extent,the decentralized management of the algorithm can improve the security and confidentiality.At the same time,the multi-screen display of the platform enables users to observe the real-time navigation position,navigation positioning results,navigation errors and other information without switching the interface,which can improve the convenience.In order to improve the aesthetics of the platform system interface,the flexibility of updating and upgrading module,the application of VC++,High Speed Chart control,enhance the dynamic display effect,the application of chart and dial ActiveX control,increase software maintainability.In the debugging of the platform,a solution is proposed to solve the problems of interface jamming,flickering and data sticking,and the loading algorithm.DLL file and the way to save the file are optimized to make it convenient and stable in loading and verifying multiple algorithms.Finally,based on the performance verification platform of marine navigation algorithm,a series of algorithms such as strapdown inertial navigation algorithm in polar region and non-polar region,SINS/GNSS integrated navigation algorithm,SINS/DVL/GNSS multi-source information fusion integrated navigation algorithm,long-term SINS/DVL/GNSS multi-source information fusion integrated navigation algorithm and so on are tested,and the functions and performance of the platform are completed.After testing,the platform is designed to meet the needs of the platform,with excellent practicability and practical significance.