飛しょう体誘導制御系における目標追尾装置の動特性モデル

Abstract

A homing missile which is guided by the laws such as the proportional navigation guidance, the argumented proportional navigation guidance, and the optimal guidance has a target tracker to detect the line-of-sight rate, which is essentially needed for these guidance laws. Three different types of the tracker are used for this purpose; The first is the free-gyro gimbaled tracker; the second is the rate-gyro gimbaled tracker; the third is the strapdown type tracker. In this paper, basic dynamic models of these trackers are given at first, and then unstructured model uncertainty of these trackers are discussed. And the imperfect tracker stabilization is defined from the standpoint of the tracker model uncertainty, which is the important information for the robust design of the missile guidance system. By using this definition, it is shown that the stabilization loop gain of the rate-gyro gimbaled tracker and the sample frame time of the strapdown type tracker correspond each other.