Abstract:

Aimming at the problem of the disturbance rejection rate parasitic loop of the strapdown phased array radar seeker in practical engineering applications, the causes of the radome and seeker disturbance rejection rate parasitic loop are analyzed, the guidance system model which considers the disturbance rejection rate parasitic of the radome and the seeker is established, the effect of the radome and seeker disturbance rejection rate parasitic loop on the guidance system stability region is studied. Based on the dimensionless adjoint function method, the effect of superposition of the radome and seeker disturbance rejection rate parasitic loop on the convergence of miss distance is studied. Researches show that singly studing the disturbance rejection rate parasitic loop of the radome or the seeker is of less practical engineering significance for the design of the missile guidance system, the staility region of the proportion navigation guidance system is affected by the coactions of the radome and seeker disturbance rejection parasitic loop, the guidance system stability region and miss distance are affected by different superposition cases. Miss distance and guidance system stability are seriously affected by positive feedback superposition, which should be avoided.