| Citation: | XIAO Y，CHEN X，YANG L Y，et al. Analysis of radome error on guidance loop stability[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（11）：3066-3074 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0780
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To address the problem that the parasitic loop of the radar homing missile radome affects the stability of the guidance and control system, a three-dimensional nonlinear guidance loop model considering the radome error is established, and an analysis method on the stability of the guidance loop was proposed based on the radome error slope in the form of state equation. The quantitative influence form of the radome error slope on the guidance loop system matrix is derived, and based on the stability criterion of the linear time-invariant system, the stability conditions of the missile guidance loop under the influence of the radome error slope are calculated. Calculation analysis and simulation results show that the positive feedback of the parasitic loop will cause the oscillating divergence of the missile attitude, which will seriously affect the stability of the guidance loop.
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