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本文设计了一种半实物实验系统,能模拟出航天器在地球轨道及深空飞行时接收脉冲星周期X射线信号的情形.该系统主要由动态信号数据库、X射线模拟源、真空系统和探测系统组成.模拟源可以模拟出任意波形的脉冲轮廓,探测系统的时间分辨率优于2μs,通过分析时间转化模型给出了动态信号生成方法.实验模拟了航天器在近地轨道飞行一周接收Crab脉冲信号,将采集的光子到达时间转换到太阳系质心时后累积脉冲轮廓与标准轮廓相关度为0.9882.
In this paper, a semi-physical experiment system is designed to simulate the situation when the spacecraft receives the X-ray signal of the pulsar during orbit and deep space flight.The system mainly consists of dynamic signal database, X-ray source, vacuum system and detection System, the simulation source can simulate the pulse profile of arbitrary waveform, the time resolution of the detection system is better than 2μs, and the dynamic signal generation method is given by analyzing the time transformation model.The experiment simulates the spacecraft receiving Crab Pulse signal, the photon arrival time collected converted to the centroid of the solar system when the cumulative pulse profile and standard profile correlation of 0.9882.