基于捷联导引头的制导信息解耦及滤波方法

Decoupling and Filter Algorithm for Guidance Information Based on Strap-down Seeker

近年来,随着现代化战争对导弹低成本、小体积要求的不断提高,捷联导引头制导体制逐渐成为了发展趋势;但是,与传统的平台导引头相比,捷联导引头的测量系统固连于弹体上,且在导弹飞行过程中,由于弹体运动的耦合效应,无法获取导弹在惯性空间下的视线角速度信息;该文研究了一种应用于捷联导引头平台的导弹制导信息解耦及滤波方法,解算出能够用于导弹比例导引的有效制导信息,并结合工程实际进行了数字仿真分析和中靶精度统计;仿真结果表明,该方法能够准确隔离弹体姿态对制导信息的影响,并能精确命中目标,为捷联导引头体制工程化应用提供了有效参考。

In recent years,with the modernization of the war on missile of low cost and minute extension requirements are constantly strengthened,the strap-down seeker guidance system is becoming a developing trend.However,the measuring system of the strap-down seeker is fixed to the projectile body compared with the traditional platform seeker.During the flight of the missile,we can’t obtain the sight angle velocity of missile in inertial space because of the coupling effect.A method of decoupling and filtering of missile guidance information for strap-down seeker is presented in this paper.The effective guidance information for proportional guidance of missile is calculated.Then carry out the numerical simulation and target accuracy statistics.Simulation results show that this method can accurately isolate the influence of missile attitude on the guidance information and hit the target accurately.This paper provides an effective reference for the engineering application of the strap-down seeker system.