The Method of Trajectory and Attitude Data Generation for Space Target

空间目标的轨迹和姿态数据生成

School of Astronautics, Harbin Institute of Technology, Harbin 150001, China

Received: 10 May 2018

Abstract

To solve the problem of space targets' trajectory and attitude data generation in system simulation, the characteristics of various types of ballistic missiles and their midcourse targets are analyzed deeply. The baseline ballistic is divided into four types and design methods are given respectively, based on which multiple independently reentry vehicle (MIRV) ballistic design method is established. This method doesn't need preparations and simplifies the system simulation. In addition, an attitude data generation method according to micro-motion characteristic quantity is proposed in order to simulate midcourse target's micro-motion. This method doesn't require numerical integral and speeds up the computation. Simulation results show that four types of baseline trajectory and MIRV trajectory that can accurately hit the target are generated in ten seconds. In addition, the attitude data can reflect the micro-motion characteristic, and the time for data generation is short. This method can meet the requirements of system simulation.

摘要

针对空间目标的轨迹和姿态数据生成问题，对各类空间目标的特性进行了深入的分析，将其基准弹道分为4种类型并分别给出了设计方法，在此基础之上建立了分导弹道设计方法，该方法无需长时间的准备工作，大大简化了系统仿真的工作量。此外为模拟中段目标的微动特性建立了由微动特征量直接计算姿态数据的姿态数据生成方法，该方法无需进行积分计算，加快了计算速度。最后对以上方法进行了仿真验证。仿真结果表明，提出的方法能够在10 s内生成准确命中目标的四类基准弹道和分导弹道。此外，生成的姿态数据能够反映中段目标的微动特性，数据生成耗时短且无需事先准备工作，能够较好地满足系统仿真的要求。