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为了有效抑制多普勒效应对脉冲到达时间精度的影响,提出了一种基于星光多普勒的脉冲星脉冲到达时间补偿方法.该方法首先根据多颗恒星的星光多普勒频移解算出高精度航天器速度信息,然后利用该速度信息对X射线探测器获得的脉冲光子到达时间进行补偿,最后利用历元叠加法累积脉冲光子获得脉冲到达时间.该方法能有效抑制航天器高速运动对脉冲到达时间的不利影响,理论分析和实验结果表明了该方法的可行性和有效性;该方法的补偿精度比轨道外推方法高出两个数量级,且该方法的鲁棒性比轨道外推方法更强.
In order to effectively suppress the effect of Doppler effect on the pulse arrival time accuracy, a pulse Doppler pulse arrival time compensation method based on star Doppler imaging is proposed. The method first calculates the height And then use the velocity information to compensate the arrival time of the pulsed photon obtained by the X-ray detector. Finally, the pulsed photon is accumulated by using the epoch superposition method to obtain the arrival time of the pulse. This method can effectively suppress the high-speed movement of the spacecraft against the impulse The theoretical analysis and experimental results show the feasibility and effectiveness of this method. The compensation accuracy of this method is two orders of magnitude higher than that of the orbit extrapolation method, and its robustness is better than that of the orbit extrapolation method Stronger