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为进行X射线脉冲星导航的关键技术研究,搭建了基于X射线脉冲星导航的地面模拟系统.地面模拟系统由模拟X射线脉冲源、基于微通道板的高灵敏X射线光子探测器、电荷灵敏前放和主放电路、时间测量单元、X射线脉冲轮廓构造及X射线脉冲到达时间测量系统组成.该模拟系统可在地面模拟X射线脉冲星导航的星源的强度、周期及脉冲轮廓,实现对X射线脉冲星单光子到达时间的记录,构造X射线脉冲星脉冲轮廓,计算X射线脉冲到达时间.描述了基于X射线脉冲星导航的地面模拟系统的组成和工作原理,报道了基于X射线脉冲星导航的地面模拟系统的初步结果.
In order to study the key technologies of X-ray pulsar navigation, a ground simulation system based on X-ray pulsar navigation is set up.The ground simulation system consists of an analog X-ray pulse source, a highly sensitive X-ray photodetector based on a microchannel plate, a charge sensitive Preamplifier and main discharge circuit, time measuring unit, X-ray pulse profile and X-ray pulse arrival time measurement system.The simulation system can simulate the intensity, period and pulse profile of the source of X-ray pulsar navigation on the ground X-ray pulsar pulse profile is constructed and X-ray pulse arrival time is calculated by recording single-photon arrival time of X-ray pulsar.The composition and working principle of ground simulation system based on X-ray pulsar navigation are described, Preliminary Results of Ground Simulation System for Pulsar Navigation.