Guidance device for missile

TL;DR: In this article, the authors proposed a method to obtain high target searching performance and high target hitting performance simultaneously by a method wherein angle control with respect to the axis of a fuselage is effected by an angle commanding input before target acquisition while angular velocity control, tracking a target while effecting space stabilization, is effected after the target acquisition.

Abstract: PURPOSE:To obtain high target searching performance and high target hitting performance simultaneously by a method wherein angle control with respect to the axis of a fuselage is effected by an angle commanding input before target acquisition while angular velocity control, tracking a target while effecting space stabilization, is effected after the target acquisition. CONSTITUTION:An angle command lambdaT or an angular velocity command sigmaT is indicated by an indicator 1a depending on the guidance condition of a missile. When the angle command is inputted, an error epsilon between said angle command lambdaT and a seaker axial angle lambda, obtained by an angle detector 9, is obtained and the error angle epsilon is amplified by an angle amplifier 2 while a difference between the obtained signal and an angular velocity lambda obtained by an angular velocity detector 10 is amplified by an angular velocity amplifier 3. On the other hand, when the angular velocity command is inputted, the signal of a difference between the angular velocity sigma of a seeker axis with respect to an inertial axis detected by an inertia angular velocity detector 13 attached to a seeker 8 is inputted into a selecting switch 14 through an integrator 15 and a compensating amplifier 16. According to this method, an angle control function, scanning the angular velocity lambda so as to nullify the difference epsilon by switching a switch 14, and a guidance function, tracking the target after stabilizing the seeker axis spacially with respect to the inertia axis and guiding a missile to the direction of the target, can be obtained.