• Title/Summary/Keyword: navigation environment generation

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Design of Navigation Environment Generation Module of M&S Software for Integrated Navigation System Performance Evaluation

  • Kim, Heyone;Lee, Junhak;Oh, Sang Heon;So, Hyoungmin;Hwang, Dong-Hwan
    • Journal of Positioning, Navigation, and Timing
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    • v.7 no.2
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    • pp.73-90
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    • 2018
  • Various navigation systems are integrated with the Global Navigation Satellite System (GNSS) to improve navigation performance so that continuous navigation information can be obtained even when navigation performance is degraded or navigation is not available due to the outage of GNSS. Time and cost can be reduced by evaluating performance of the integrated navigation system through Modeling and Simulation (M&S) software prior to the deployment of the integrated navigation system. The measurements of the navigation system should be generated to evaluate performance through of the navigation system M&S software. This paper proposes a method of designing a navigation environment generation module in M&S software of the integrated navigation system. To show applicability of the proposed method to M&S software design of the integrated navigation system, functions are verified through MATLAB. And then visual C++ based M&S software for the integrated navigation system is implemented to check the operation of the navigation environment generation module. The reference trajectory is generated and true measurements of Global Positioning System (GPS), Korea Positioning System (KPS), and enhanced Long range navigation (eLoran) are generated from the reference trajectory. The navigation results obtained from the true measurements are compared with the reference trajectories. The results show that the measurements generated using the design generation module by the proposed method are valid and the navigation environment generation module can be applied to M&S software of the integrated navigation system.

M&S Software Design of Multiple Radio Positioning Integration System (다중 전파측위 융복합 시스템의 M&S 소프트웨어 설계)

  • Koo, Moonsuk;Kim, YoungJoon;Choi, Kwang-Ho;So, Hyoungmin;Oh, Sang Heon;Kim, Seong-Cheol;Lee, Hyung-Keun;Hwang, Dong-Hwan
    • Journal of the Korea Institute of Military Science and Technology
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    • v.18 no.5
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    • pp.602-611
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    • 2015
  • Even though GNSS provides highly accurate navigation information all over the world, it is vulnerable to jamming in the electronic warfare due to its weak signal power. The United States and Korea have plans to use terrestrial navigation systems as back-up systems during outage of GNSS. In order to develop back-up systems of GNSS, an M&S software platform is necessary for performance evaluation of various vehicle trajectories and integrated navigation systems. In this paper a design method of an M&S software is proposed for evaluation of multiple radio positioning integration systems. The proposed M&S software consists of a navigation environment generation part, a navigation algorithm part, a GUI part and a coverage analysis part. Effectiveness of the proposed design method is shown by implementing an M&S software for the GPS, DME and eLoran navigation systems.