摘要
为验证X射线脉冲星导航的关键技术,本文描述了基于X射线脉冲星导航的半实物仿真系统组成和工作原理,并搭建了基于X射线脉冲星导航的半实物仿真系统。系统由信号模拟单元、信号接收单元和导航估计单元组成,此系统可有效模拟X射线脉冲星导航的星源强度、周期及脉冲轮廓,记录X射线脉冲星单光子到达时间,恢复X射线脉冲星脉冲轮廓,计算X射线脉冲到达时间及导航估计解算。所设计的半实物仿真系统为X射线脉冲星导航算法测试提供了有效手段,对X射线脉冲星自主导航研究的可行性验证、动态性能测试以及工程应用具有一定的参考价值。
A hardware-in-the-loop simulation system for X-ray pulsar navigation was built in order to do some research for the key technologies in X-ray pulsar navigation field.The system consists of an X-ray pulsar source simulation unit,an X-ray photon receive unit and a navigation estimate unit.The system can simulate X-ray pulsar with different intensities,periods and pulse profiles.The TOA of individual X-ray photon was recorded,and the pulse profile was reconstructed with these data.By comparing the measured pulse profile with the standard pulse profile of the X-ray pulsar source generator,the pulse TOA and the navigation estimation were calculated in the DSP chip.This system is proved effective in test some pulsar navigation algorithms,and can provide reference for the test of feasibility,dynamics and the project application for related X-ray pulsar navigation.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2012年第5期10-14,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(10973048)
关键词
X射线脉冲星
导航系统
半实物仿真
X-ray pulsars
navigation system
hardware-in-the-loop simulation
