MATLAB与STK组合仿真在星载天线伺服系统设计中的应用

摘要

利用MATLAB和System Tool Kit(STK)软件搭建组合仿真环境.以某卫星的天线算法为例,将仿真结果与在轨数据进行比对.组合仿真综合考虑了轨道特性和卫星姿态变化对天线指向角度的影响.仿真结果表明,利用MATLAB和STK组合仿真能够提前验证指向算法的准确度和精度,仿真数据与在轨实际应用数据一致性高,对后续天线指向算法设计具有较强的指导意义.%MATLAB and System Tool Kit(STK) are used to build a combined simulation system, whose performance is verified by an example of spaceborne antenna pointing angle calculation. The influences of orbit characteristics and satellite's attitude changes on the antenna pointing angle are considered in the combined simulation. The simulation results are consistent with the on-orbit operation data, which means that the MATLAB and STK combined simulation can validate the accuracy and precision of the pointing angle calculation. The proposed combined simulation method can provide some reference to the future design of antenna pointing angle calculation.