摘要
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.
A simulation experiment system for X-ray pulsar based navigation is setup in order to study the key technologies of X-ray pulsar navigation. The system consists of X-ray pulsar source generator,super sensitive X-ray photon counting detector,charge sensitive amplifier,shaping amplifier,time measurement,X-ray pulse profile reconstruction and pulse time of arrival （TOA） measurement. The system can simulate the X-ray pulsar source with different intensities,period and pulse profile. The TOA of individual X-ray photon is recorded,the pulse profile is reconstructed with these data. And by comparing the measured pulse profile with the standard pulse profile of the X-ray pulsar source generator,the pulse TOA is calculated. The construction and the principle of the simulation experiment system are introduced and experiment results are presented.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第2期847-855,共9页
Acta Physica Sinica
关键词
X射线脉冲星导航
微通道板光子探测器
脉冲轮廓
pulsar navigation
micro-channel plate photon counting detector
pulsar profile
