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三维(3D)次最优制导律(3DSGL)的设计过程和形式都很复杂,因此,提出了利用二维(2D)制导律组合实现三维制导要求的构想。通过分析弹道倾角与其在OXY平面和OXZ平面上投影之间的关系,得到了制导律的设计要求。根据要求,设计了用于横向制导的二维次最优制导律。结合二维纵向次最优制导律,进行了6自由度全弹道仿真。在初始方位角偏差较大的情况下,与另外3种制导律模式进行了比较。当横向使用比例导引律(PNG)时,着地角会明显减小。使用本文的制导模式,可以实现大着地角,满足制导精度要求,并且可以降低需用过载以满足控制要求,其制导效果接近三维次最优制导律,但是形式要简单得多。
The design process and the form of 3DSGL are very complicated. Therefore, the conception of using 3D (2D) guidance law to realize 3D guidance is proposed. By analyzing the relationship between ballistic inclination and its projection on the OXY plane and the OXZ plane, the design requirements of the guidance law are obtained. On request, a two-dimensional suboptimal guidance law for lateral guidance was designed. Combined with two-dimensional longitudinal suboptimal guidance law, a 6 DOF full-ballistic simulation is carried out. In the case of large initial azimuth deviation, three other guidance law modes were compared. When using the Proportional Guidance Law (PNG) horizontally, the land angle significantly decreases. Using the guidance model in this paper, we can achieve a large ground angle to meet the guidance accuracy requirements, and can reduce the need to overload to meet the control requirements, the guidance effect close to the three dimensional suboptimal guidance law, but the form is much simpler.