Journal of System Simulation ›› 2020, Vol. 32 ›› Issue (2): 262-268.doi: 10.16182/j.issn1004731x.joss.18-0031

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Research on Glide Width Simulation System of Instrument Landing System

Jiang Chunying1, Kang Yuxiang1, You Xiaofeng2, Zhang Xiaoxin3, Ye Changlong1   

  1. 1. School of Mechatronics, Shenyang Aerospace University, Shenyang 110136, China;
    2. Northeast Regional Air Traffic Management Bureau of Civil Aviation of China, Shenyang 110136, China;
    3. Shenyang Aerospace University College of Electronic and Information Engineering, Shenyang 110136, China
  • Received:2018-01-17 Revised:2018-06-07 Online:2020-02-18 Published:2020-02-19

Abstract: Based on the principle of the formation of the instrumental landing system ILS(Instrument Landing System) gliding DDM(Different in the Depth of Modulation) index, and the factors that affect DDM are found as the amplitude of SBO(Sideband Only) signal. The relationmodel between the amplitude and the glide width, of the Half-width SBO signal in the linear variation range of DDM are obtained by the control variable method. And Based on the measured data, the correctness of the model is verified. Based on the mathematical model and combined with the NM7000 equipment, a simulation system is built to dynamically simulate the adjustment process of the slide width. The test results show that the system error is less than 1%. System applications are important for the guiding calibration flight and the equipment maintenance.

Key words: glide, control variable method, DDM, glide width, SBO

CLC Number: