轨道预报是指根据空间目标初始时刻的状态, 利用轨道力学建立的数学模型来预测未来某一时刻的轨道信息。简单介绍了基准星辐射定标系统(PSRCS)和定标轨道预报流程。研究了定标空间位置设计方法和辐射传递模型, 在此基础上提出一种基于基准星定标的轨道预报方法, 用来为待定标卫星选取适合的定标弧段, 并精确预报定标时刻基准星、待定标卫星的轨道信息。通过分析基准星定标轨道约束条件, 以高分一号(GF-1)太阳同步轨道卫星作为基准星轨道, 仿真出满足定标条件的不同待定标卫星轨道上的定标可见时段。结果验证了基准星定标轨道预报方法的可行性。

Utilizing the mathematical model of the orbit mechanics, the orbit prediction is to forecast the space target’s orbit information of a certain time based on the orbit of the initial time. The proper satellite radiometric calibration system (PSRCS) and calibration orbit prediction process are introduced briefly. On the basis of the research of the calibration spatial position design method and the radiative transfer model, an orbit prediction method for proper satellite radiometric calibration is proposed to select the appropriate calibration arc for the satellite to be calibrated and to predict the orbit information of the proper satellite and the satellite to be calibrated. By analyzing the orbit constraint of the proper satellite calibration, the GF-1 solar synchronous orbit is chosen as the proper satellite orbit in order to simulate the calibration visible time for different satellites to be calibrated. The results verify the feasibility of the proper satellite calibration orbit prediction method.